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We at Tactical Operations have been "called out", and our integrity is in question.

We have heard statements that our quarter minute guarantee is 100% B.S. and that the procedure of building precision rifles is done exactly the same by everyone. Some of debate became blatant personal bashing by people that don?t own one of our rifles or don?t know what we do, or how we do it. We are happy to attempt to clear the air and discuss some of our procedures (not all will be discussed, because several things we do are proprietary), how we build our weapon platforms, and why we do it. We will also address certain statements, questions, and assertions, some, of which, were legitimate, honest questions; some were loosely phrased as attacks on myself and my staff.




Yes, we use similar components as many of our competitors.
But what we do with those components is slightly different than other builders.

Firstly, the myth or misconception is that ?trued is trued? when it comes to a receiver.
It isn't that simple. You need to address these questions:
What kind of surface finishes do you hold?
What is your tolerance on alignment? How do you inspect your work;
Dial caliper?; Depth gauge?; "Laser reflection"?.


Simple math will make it clear to any mechanical engineer, that
.0001 misalignment in the rifle equals .100 spread at 100 yards
The laws of similar triangles or basic trigonometry will easily prove this maxim.

Therefore, our job as rifle builders, is to constantly and consistently inspect our work to prevent accumulation of
those errors, and to maintain tolerances to .0001 or better.
An accumulation of .001 is fatal to consistent performance results.
With highly skilled technicians using very expensive and precise equipment, "squareness"
and "parallelism" of our bolts and
receiver lugs can be, and are, held to tolerances within 50 millionths of an inch.
The receiver is faced, and the threads are chased out with a single point tool
at the same setting as the lug operation,
insuring the "parallelism" of those surfaces as well.

Our tolerances are checked and insured through "laser metrology".

We used to check-lap our lugs with #320 abrasive, for 10 lifts of the bolt handle,
to give visual indication of alignment. We haven?t done that for at least 8 years.
With the high surface finishes we now achieve, we merely take a marking (Sharpie) pen and
Put a thin coat of ink on the receiver and bolt lugs, and let it dry.
With finger pressure on the bolt face, one lift of the bolt handle will wipe the surfaces
clean in the engagement areas. You can only do that if your work is correctly done.
Unless final lapping is properly applied, lug surfaces lose their concentric surface and produce grooves and
hollows that will eventually wear flat causing ever
increasing headspace. Poor, or excessive lapping results in tapered bolts and receiver lugs, reducing desirable contact area, resulting in uneven bolt lift, and sometimes excessive headspace that increases as the bolt is closed.
Lapping the bolt and/or receiver lugs is merely an in-exact attempt to improve the surface
finish of the machined lugs.


So, one can see there are several ways to blue print a receiver.
Perhaps, for some builders, true is square within .001. For Tactical Operations, square is 50 Millionths which is 20 times more accurate.



Moreover, at the same time the bolt lugs are being machined, we also bring the bolt
face perpendicular to the bolt axis. Our usual tolerances and finish prevail. The
firing pin hole is checked for concentricity at the same time. If it isn?t acceptable tolerances,
the bolt is scrapped before machining.

In regard to barrels, there are many that are more than acceptable,but we have found Krieger
barrels give us the best combination of accuracy and life.

Another misconception; A chamber is just a chamber, and a reamer is just a reamer.

chambering is not just chambering. What measure of alignment of the chamber to the
bore do you get ? How closely is the bore centered before chambering ?
001 ? 0001 ? .00005 ? How concentric is your chamber ? Is it concentric at all?
To within what limits ? Is it round ? Just how round is it? How do other builders measure roundness?


Krieger checked ours, and reported that we were only 2 millionths misaligned.
with all due humility and respect, I submit that this is probably better than most.
If one of you would like to call "FOUL" or "BS" on this, then I refer you to call Krieger (262-628-8558) and ask for
Mike. I think he will be more than able to support our statement. By the way, they independently measured and
verified the alignment.


Further, a .308 reamer is not just a .308 reamer.
The original .308 chamber was designed for use in semi-automatic and
full automatic firearms. Machinegun chambers are not the best for a bolt gun.

Even a ?minimum Match chamber? is just a minimum spec SAMMI chamber.
We design our own reamers for the calibers we provide. They are made for
closer tolerance, and "exactly" fit the match ammo we specify for the rifles.


The neck, throat, and lead are extremely critical to bullet alignment,
and are by far the most critical factors affecting accuracy.
Any bullet that starts into the lead misaligned, will not be turning on it?s mechanical
axis when it leaves the muzzle. The bullet will be flying with its nose and base
describing a tiny circle, instead of turning true on it?s mechanical axis.
This makes the bullet behave similar to an unbalanced gyroscope.
Due to precession forces, the bullet flies in a helix around the true line of flight.
On impact, that bullet can land on the target anywhere within the circle described
by the diameter of the helix. The greater the misalignment of the bullet, the greater
the size of the helix.

The greater the size of the helix, the greater the size of the group at all distances.

Our job as accuracy rifle builders is to reduce the alignment error of the bullet,
and eliminate factors that upset its flight (such as the muzzle face and crown), to keep
the helix diameter to the absolute minimum.

Headspace: What?s your tolerance and why?
Many, many times we have heard others tell us the bolt should
?close on a GO and halfway on a NO GO?.
That?s fine for a hunting rifle, or firearm that doesn?t require pinpoint accuracy.

We routinely use 0.000 head space with a maximum of 0.001
The reason, is that we have to have both locking lugs fully
seated at the time of ignition.


An unseated lug will move during ignition as it seats,
allowing the case head to wiggle or shift minutely, affecting the alignment
of the case in the chamber which affects bullet alignment and
helix diameter.


Having the locking lugs flat and ultra smooth also allows
the case head to align the bolt in the receiver, as it closes,
rather than the bolt influencing the cartridge.
For this reason the looseness of the Remington receiver doesn?t affect the way
our rifles shoot, and allows valuable space for the dirt and sand to fall
out of them. Our system of loose receiver/ floating bolt/ tight chamber,
seems to work on any bolt receiver we?ve tried it on
.

It has been successful on a wide variety of bolt actions. It seems that the receiver
is just there to support the bolt until it is correctly locked up.

We hold tolerances and perform constant inspections,
we design and make special tools and fixtures, to do jobs,
there are stock items easily available but we choose to make our own.

Tac-Ops rifles are painstakingly built one at time.
Some would say such work costs too much in terms of time and tool investment.
As stated on our web site ?Every rifle, Suppressor, bag or any product we provide
is made as if it were being built and used for ourselves. Further more we also
hold a U.S. patent on one of our suppressor design


I hope the above was helpful in explaining a little bit about how
and why we do what we do here at Tac Ops.




In closing, let me address some issues that were in question. I'm sure from
reading what we stated above, clearly shows that we do
things differently here at Tac Ops.

I have little doubt now, that when we address some issues that were posted
in certain forum threads, our position will be crystal clear.
This should be the
tell all, end all statement for anyone who had, has, or will have questions or doubts
about our accuracy statements or our business philosophy


I apologize for not clearing things up earlier, As I think it could
have brought an early end to the seemingly endless forum threads,
hostilities, and yes even threats.
I realize now that I should have spoken
out sooner to have minimize this frenzy. However in truth we tried to
stay out of the fray and remain above this. And to be totally honest, we
have more important things to do.
I only request that you remember we
were ?CALLED OUT? and not to nicely at that. Please understand that one may
perceive what?s going to be stated will be somewhat harsh.
We at Tac Ops
never stated we were the smartest or the most intelligent builders in the industry
and we are certainly not the only Company in business to guarantee 1/4 moa in this industry.






Your rifles I'm sure are awesome, they look good and shoot good but if you think a .0005 out spec recoil lug is making your gun a ? compared to a 1/4 moa gun. You need to have a long sit down with some other smiths and get out to the range.

SKRanger

Shannon, Regarding our tolerances for recoil lugs: It is not that the lug being
.0005 out changes the accuracy potential from 1/2 to ? MOA. Experiments and
record keeping over the last decade, have clearly shown that tapered recoil lugs
affect barrel/receiver/bolt alignment adversely. Considering the location of the
misalignment caused by the tapered lug, its effect is magnified by barrel length.
We go to extreme lengths to achieve perfect alignment. No one is forcing
Other builders to do the same. Tac-Ops has exacting tolerance standards for
all parts of our rifles. Misalignment and dimensional error is cumulative.
Taking pains to eliminate it results in improved accuracy. At our level of finish
And inspection, .0005 is a significant amount. Most others don?t work to the
Limits we do. Their choice. In the average rifle, .0005 is insignificant. Accuracy
Is improved by eliminating errors in construction. A better BBL is one that?s
Uniform and has less tolerance errors in the bore. Receiver re-machining is to
Eliminate tolerance and alignment errors installed at the factory. A bolt that is
ground square on the lugs and bolt face is better than a rough
one or out-of-square one. The surface finish of the parts is important. We hold
finishes on lugs to about .5 to 1.5 RMS. A bolt that is turned, not ground, has a
surface roughness mean of greater than .001.(approx.10-12 RMS)
Therefore any misalignment elsewhere in that rifle of less then .001 is
meaningless. A .0005 lug taper, is below the inspection tolerances limit,
established by the rest of that rifle. Lapping the bolt/receiver lugs is merely
an inexact attempt to improve the surface finish of the machined lugs.


Tac Ops



Not even Surgeons are perfect. I was informed today that lugs
had to be lapped and checked. While I'll agree they are better,
they are still not perfect.

Kgunz11
Kgunz, Lapping lugs is important on all recievers period. BAT,
Nesika, Surgeon thats absolutly no pun that somone had to
lapp lugs on a Surgeon? You a gunsmith now?


George Gardner, G.A. Precision

No George, I am not a gunsmith, nor have I ever claimed to be.
Was simply making a statement that the receiver I paid $1053.oo for
to have a rifle built would still need action work. I was under the
impression that the action would not have to be touched... I am sure
there are others that thought that as well.

Kgunz11

At Tac Ops we do not lap, we use another procedure.

Tac Ops



Originally posted by S-1 on AR Tactcal The crown of the barrel
Is .005 ? out of squre to a coaxially aligned bore .160? from the
Bore of the center.

Please let us all know how you measured 5 tenthouands of an inch
On a crown ??? this I have to hear and see. For those wondering
These tolerance are impossible to hold on any lathe currently made.
But I guess it is possible louis has invented something no one else
Knows about.

George Gardner, G.A. precision
Disclaimer We are not in this particular debate but we would like to
Share How this procedure can be done. One would put a tenths
Indicator on the muzzle and revolve the chuck this would give you
the reading.

Most high quality tool room lathes will easily hold .0001.

We routinely hold .0001 for squareness and parallelism.

Here at Tac Ops have a manual lathe that will hold 50 millionths.
We periodically check by cutting a one foot test bar several times
a Year.

Tac Ops



Personally I don?t put much stock in a 1/4 MOA guarantee as it will
Only work at shorter distances where the wind won?t start messing
With you and most people can?t shoot that well anyways.

Rob01
That accurate rifles only work at short distances.
Utterly false.
A bullet that is started straight, and flies with its rotational axis
Concentric with its trajectory, will always shoot straighter
And more consistently, than a rifle whose bullet is launched
With the rotational axis is precessing slightly as it flies.
Rather than flying a straight line, the bullet flies in a small
helix around the line of flight. As the bullet slows, the rpm drops,
and the helix size increases. The bullet can strike anywhere on the
target inside that circle described by the helix. A 100 to 200 yard
test target is a good indicator of intrinsic helix diameter. This is why
a rifle that shoots 1/4 minute or better, will always be a better
performer that one which delivers larger groups.

This was mixed with the notion that wind invalidates all accuracy.
Wind affects ALL bullets to some extent. The issue here is that the
Assertion that wind affects all bullets equally. Wind in a directional
Input vector. As such, wind will change the bullets line of flight
depending on the force and direction of the wind. Bullets that are
already flying in a helix will see the size of the helix increase as the
wind pushes on them at all points in the helix. The wind increases
the precessive forces already at work. A bullet turning on axis flying
in a zero helix or minuscule helix will be deflected by the wind, but
since precessive forces are small, to begin with, the magnitude of
the change will be smaller. Due to the lesser off the flight path time
the wind had to work on the bullet, the recessive vector is smaller.
Hence, deflection, but little increase in group size.


Tac Ops

___________________________________________________________


UPDATE 1/22/08

I have a Jet suppressor attached to a GAP 22" barrel on an AI AW. It tends to work itself loose after several shots, which affects the accuracy. What do you guys do to keep this from happening, but still allow for quick removal? Thanks.
_________________________
Many risks fail because they were not taken in time. Too
Many risks are postponed until unnecessarily elaborate
preparations are made...Don't sit back waiting for the perfect
moment. It almost never comes.
http://www.snipercentral.com/forums/vie ... hp?t=13383

We would like to share our professional opinion:

Excuse my delay but we have been very busy since coming back on line from the New Year. Let me try to address some concerns here and if one needs more intel please feel free to contact me telephonically.

Very slight Point of impact changes resulting from installing/ removing a
rifle Suppressor can result from slight changes in barrel harmonics, larger
impact changes are usually the result of cumulative machining errors. Two
of the main causes of impact shifts, after screwing on a suppressor are:


1. A lack of barrel shoulder squareness (perpendicularity to the bore's
centerline).

2. Poorly cut barrel threads that are not co-axially aligned with the
bore centerline, or barrel threads that are cut too small to fit the
suppressor threads properly, once again allowing misalignment of the
suppressor.

Of course the poorer the thread fit, the more any misalignment inherent in
the shoulder will force the suppressor off line.

If there is an out-of-square condition of the shoulder surrounding the
the threads on the back of the suppressor, you should have chosen a higher
quality suppressor manufacturer.

The impact shift on our Tac Ops rifles is less than 1/2 MOA. The vast
majority of this shift is caused by a slight change in the barrels
harmonics with the additional mass of the suppressor, as our machining and alignment tolerances are held to extremely high standards. Plumbers tape would never be used under any circumstances and is not necessary. In fact our suppressor to barrel fit is so good, even the thinnest of Plumber's tape would not survive the install of our suppressor; there just is not enough room for any trash to be in between our threads, the fit is that precise. Truly skilled machinists do not use Plumber's tape, they just cut the threads to the correct size knowing how key this is to proper alignment.

A three jaw chuck will not do for muzzle threading, when long range
precision is desired. Even when new, the best 3 jaw chucks are only good
for .0015" concentricity (1 1/2 thousandths).

We use different fixtures so that the barrel can be controlled and true
alignment achieved. This is important, because small errors in alignment
become big errors in impact at extended range. Zero runout with a .0001"
indicator is the only acceptable outcome for long range work.

We CNC our screw on caps to protect the barrel while not in
use, our cap does NOT Change the harmonics of the barrel what's so ever.

Group size change indicates the bullet is probably scraping one of the
baffles on its flight through the can or possibly grazing the end cap ever
so slightly as the bullet exits the can. This is another area, where
INTENSIVE ATTENTION TO DETAIL to machining, and detailed inspections
deliver accuracy, and the user-friendly operation of the firearm. The bottom line we would not ever recommend plumbers tape, I hope this puts your mind at ease.



Tac Ops

___________________________________________________________



Finally, I would like to thank everyone that has taken time to read
Our statement, visit our website, or called and took the time to speak
To me or one of my staff. It is my sincere hope and desire that this
Statement is the end to what has been an emotion filled and taxing
Time for everyone involed, whether or not you own a Tac-Ops rifle or
A competitor?s rifle. Tactical Operations is an honorable and fair
Business, run by professional standards and we will not be party to
The bashing or slander of a competitor nor will we attack a competitor
Without provocation and most importantly without facts. We command
Respect through our actions not by request, and any person(s) or
Engaging in future libelous or slanderous activities against Tactical
Operations or staff will be met with legal intervention.


Michael Rescigno
Tactical Operations, Inc
 

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Nice write up Mike. Thanks. Hopefully this clears up some peoples questions.
 

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Hi

After this article I will have no question to ask :) Ekaphoto u are right article is full of intel. I hope mods will mark this writeup as sticky!
Later
 

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Amen Brother.

Thank you although it is a bitter sweet feeling i felt as i was reading it.

Sweet because you explained things the way they really are.

Bitter because you were FORCED to explain things in the first place.

Like you said, hopefully now it ends it all and all those non believers cease the BS, accusations and character assassination aimed at TacOps, TacOps owners and Sniper Central and its members.
 

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WOW! I think that should answer some of the questions posed by the nay sayers. Very informative.
How can anyone argue or dispute that? Just don't give too many secrets away Mike. That is why you continue to stay on top.
 

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Nath said:
I have a question and I'm in no way calling you out, I'm just curious about something that was raised. What exactly does the 0.25 MOA gurantee mean? 0.25 MOA for the first 500 rounds or something like that?
I'm not going to put words in Mikes mouth, but typically the guarantee means that when the rifle leaves the factory it will shoot .25, or .375, or .5 (what ever the guarantee is). Because rifles do wear ot out, some calibers quicker than others, and dependent upon care of the rifle by the owner and what ammo is shot, etc, no one really can guarantee accuracy for a certain number of rounds. That being said, with my Bravo-51 with over 500 rounds through it, it is shooting more accurate now than it ever has. It is common "understanding" that most rifles shoot better after 200 rounds than when new. My bravo shot under .25 when new, and the last time I took it out, it shot the best it ever has... here is a photo.



It measures .10" CtoC

MEL
 

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Mike....nice write up. Maybe that will help end this debate taht you and your company were unfairly dragged into.


Also....I really don't understand most of the technical information you spoke of, but.......make sure you do all that TWICE on my Echo :D


B.
:)
 

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Mike, You ever check the straightness of a barrel bore?? Actully I know you have they wander over .002 even in the real good ones.

Lathe Chucks, The Best Self centering ones guarentee .003 repeatability. Best Independant Chucks can be set to .0005 T.I.R.

OK back to your statment of checking crown runnout , Im assuming you are saying you can indicate an independant 4 or 6 jaw chuck better than .0005 on a crown that is on a tapered blank to a crown that is most likly out of center up to.002 and then your going to put a tenth indicater where. on the crown??? Im pretty sure the lands and grooves would interfere with that measurment. Im not sure I followed you correctly.
 

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Wow. Mike, I found that to be an exceptionally articulate and solid statement I approve. While I am not much of a machinist, my father is certified/qualified to machine medical equipment (LVADs as I know them, now they call them LVAS sometimes - see http://www.worldheart.com ) to .0001 (one ten thousandth of an inch: aluminum, steel, brass, and I believe titanium, but not sure), and he's not a designated machinist, the other machinists are certified beyond such. As he was a gunsmithing major in college, he is skeptical now as why with CNC machines and modern lathes that many tolerances have not grown way tighter. .001" is a relatively simple tolerance for most (not all) cuts with these tools.

For my own understanding and education I would like to see a little more clarification. It would seem if the medical industry can get past the FDA's stringent requirements, I'd assume gunsmiths have the tools and potential on their hands to set such tolerances. I feel Im missing something here. Thanks! Cheers.
 

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Hey Mike,
First off, I would like to commend you regarding the manner in which you handled this online situation. You maintained a proffesional demeanor, eloquently explaining the issues (while, quite honestly, absolutely dissecting others' arguments and slander) and made your position on future attacks firmly apparent. Well done, sir. America could use a few more like yourself.

Now, one question, and if you cannot answer this, I will understand fully: I have done a bit of research on EDM machining, especially as it applies to the chambering of rifle barrels. A few single-shot gurus are using this process to manufacture extremely tight tolerance barrels. I just wondered if you guys had ever considered/do use this process?

Finally, as a result of the great amount of respect you gained in many people's eyes from your recent post, I have a feeling you can only stand to gain business from this ordeal. While I cannot help your business right now, (fiscally responsible college student) I have every intent of ordering in the future. Don't go anywhere.

Thanks and best regards,
Nate
 

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Hello
Very good read, Michael I can see you take alot of pride in your work and enjoy reading all your post here on SC.
Here is question if the rifle is only as acurate as it worst tolrance, so the worst tolrance would be the ammo itself?

Cliffy
 

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From what I understand Tac-Ops builds some of the best rifles in the world. 1/4 MOA guarentee's are not BS at all, quite a few builders make this claim and full fill it too. Tac-Ops rifles are top grade rifles, no questions asked. Infact, I would argue that with perfect ammunition in perfect conditions, a 1/4 MOA rifle could shoot 1/10th MOA or better. Ammunition is almost always the limiting factor in a rifles accuracy. Ive seen 18" barreled rifles shoot under 1/4 MOA with factory ammo at an outdoor range. Any one who thinks building such a high quality peice of machinery is not possible needs to open there mind a bit, and get educated on the subject.
 

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Discussion Starter #15
Mike, You ever check the straightness of a barrel bore?? Actully I know you have they wander over .002 even in the real good ones.

Lathe Chucks, The Best Self centering ones guarentee .003 repeatability. Best Independant Chucks can be set to .0005 T.I.R.

OK back to your statment of checking crown runnout , Im assuming you are saying you can indicate an independant 4 or 6 jaw chuck better than .0005 on a crown that is on a tapered blank to a crown that is most likly out of center up to.002 and then your going to put a tenth indicater where. on the crown??? Im pretty sure the lands and grooves would interfere with that measurment. Im not sure I followed you correctly.
GAP



Just seems to make more sense to write it once than say it 10 times. Then there are fewer misconceptions and misquotes.

javentree


George /javentree


Our barreling lathe has two 4 jaw chucks, one inboard and one outboard of the headstock. We have lapped bore spuds with 1/10degree taper. The spuds are lapped on the diameter and checked with an optical flat straightness. When they become worn, they are discarded, or used for pin punches.
We indicate the bore at both ends, until the run out at each end reads 0.000 with a tenths indicator.
This makes the bore-to-barrel angularity, eccentricity and run out error extremely small…
Now we just use a tenths indicator with a small conical carbide point to check the crown and muzzle chamber for square ness and concentricity. This is our standard set up for most barrel work. We also cut our chambers, and thread our bbls in this set-up. Krieger said our chamber was only 2 millionths eccentric when they inspected a barrel for us as previously stated. You can make these kinds of inspections, successfully, with care. They are extremely useful during your continuing rifle development. Keeping records of your inspection results will instantly reveal if a new procedure or part is actually delivering the results you want.

With due respect this will be our final post on the matter regarding our procedures and protocol.

Tac Ops
 

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It has been successful on a wide variety of bolt actions. It seems that the receiver is just there to support the bolt until it is correctly locked up.
This is something that AR-15 shooters have knonw about for a long time.

As for Mike and TacOps...

Mike called me one Saturday and we talked for a couple of hours. Almost everything he said in his post, he said to me in that phone call. He never seems shy about sharing what he does. Quite the contrary, he takes pride in doing what he does.

I respect the man and his company.
 

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Nath said:
What exactly does the 0.25 MOA gurantee mean? 0.25 MOA for the first 500 rounds or something like that?

Thanks Nathan

Let me put my .02 in here. I f I bought a rifle that was guaranteed to hold 1/4 minute or better, and it did so for only 500 rounds, there would be legal action quickly following. I have been an LE sniper since 1992 and have had many platforms. I have had 2 Tango 51 rifles since 1998. Over those years, my fist Tango has since accumulated 8260 rounds. Every round is catalogued to document barrel life. Now, we have a very strict policy regarding all of our bolt guns at my agency; all of the bolt guns get brushed and swabbed after every three rounds. Period. The aforementiond Tango 51 is still a 1/4 minute or better rifle after the 8260 rounds.
I have been given authorization to replace any component deemed necessary by myself, if the rifles start losing accuracy. I have not done this because 1. It is not necessary yet. 2. I would like to get an idea of the service life of the rifles. I can honestly say that we are more than very pleased with the Tac Ops rifles and their service.
 

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SRTS1 said:
I have been given authorization to replace any component deemed necessary by myself, if the rifles start losing accuracy.
Cool thing is, you wouldn't even need to if you didn't want to. Mike would take care of you, no worries. He knows what your next shot might mean and Mike'll do his damndest to be sure TacOps is behind you all the way.

SRTS1 said:
I have not done this because 1. It is not necessary yet. 2. I would like to get an idea of the service life of the rifles. I can honestly say that we are more than very pleased with the Tac Ops rifles and their service.
Testiment to quality right there.

Folks, SRTS is one of those guys here who has BTDT and "knows better." Any doubters would be remiss to repudate what was just said by him, and thus truly expose their ignorance of this topic.
 

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SRTS1 said:
Let me put my .02 in here. I f I bought a rifle that was guaranteed to hold 1/4 minute or better, and it did so for only 500 rounds, there would be legal action quickly following. I have been an LE sniper since 1992 and have had many platforms. I have had 2 Tango 51 rifles since 1998. Over those years, my fist Tango has since accumulated 8260 rounds. Every round is catalogued to document barrel life. Now, we have a very strict policy regarding all of our bolt guns at my agency; all of the bolt guns get brushed and swabbed after every three rounds. Period. The aforementiond Tango 51 is still a 1/4 minute or better rifle after the 8260 rounds.
I have been given authorization to replace any component deemed necessary by myself, if the rifles start losing accuracy. I have not done this because 1. It is not necessary yet. 2. I would like to get an idea of the service life of the rifles. I can honestly say that we are more than very pleased with the Tac Ops rifles and their service.
Wish I had had a TacOps rifle when I went through sniper school back in '90. AND, I wish that we were even given the opportunity to clean bores after every 3rd round. I had a great platform(no names so no slams) that would shoot under 1/2 moa all day long. But, because of lack of knowledge from some LE trainers and time constraints, we were made to shoot up to 60 rounds between cleaning. I even got in "hot water" when I stopped shooting and tried to clean my bore. The rifle will still, after 5,000+ rounds will shoot under 3/4moa. I would think that is fairly good after the abuse "Baby" has taken. Anyway, the point of all this is, is to support your statement about barrel life and just like your car...if you change the oil every 3K miles, you are going to have much longer life from your barrel and your car. Shoot your rifle, clean it, respect it, and it will give you many years of great service. Thanks.
 

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**Edited to remove immature comments**


Mike, now that thats all done, please, go in your shop, find a Helix, throw it in some 4 jaw chuck,make it about two millionths cocentric,attach it to some lathe machine, and FINISH MY TANGO!!! Or,have Cesear do it if you're too busy on the phone.
 
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