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Discussion Starter #1
I bought a new Remington 700 long range in 300 win mag. I went zero it with federal gold medal match 190 gr. And it won't group, I'm talking 3 or 4 inch groups but the cheap Remington core lock 150 gr. That I used to get on paper shoots 1 inch groups. I check all the torque specs on stock rings and base. Any help would greatly be appreciated. Thank you
 

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Discussion Starter #2
How many rounds have you put through the barrel so far?

What is your personal best 5 shot 100 yard group with any rifle?
I have 36 rounds through it. I have a 308 set up very similar that I've been shooting for a couple years that I consistently shoot sub moa with. I know some rifles do not like a certain load but it won't even group really with federal gold medal match but shoots 1 inch groups with the Remington core lock 150gr. That I bought just to get it on paper makes me scratch my head.
 

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Check to see if the barrel is floated. Then I would let someone else shoot it. Someone who has experience with the magnums and see how they do. That rifle should shoot under 1/2" when you get it figured out.
 

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Check to see if the barrel is floated. Then I would let someone else shoot it. Someone who has experience with the magnums and see how they do. That rifle should shoot under 1/2" when you get it figured out.
I did when I first bought it. It has a bell and Carlson m40 stock on it so it should be ill recheck it. I was expecting similar accuracy as my 308 so I'm quite disappointed.
 

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If it is 3" groups with Federal Gold Medal Match something is wrong. It is either shooter or rifle related. Given that the groups with the 308 are only sub Moa and not closer to 1/2 Moa I am willing to bet that the recoil is the issue.

On the other hand, it could be rifle related. Everything from a barrel not floated to improper torque on stock screws to loose scope rings to malfunctioning scope.

I know you said the core lokt shot better. How many rounds of each did you shoot? Was it one lucky group or a pattern of several 1" groups in a row. I would expect the core lokt to group about 1" at best, but the gmm should have no problem shooting 1/2" or better.

Did you shoot the core lokt first and then the gmm? What scope are you running? Did you go back to the core lokt after shooting the gmm? Is it possible that the recoil trashed the scope after shooting a few core lokt and then the gmm wouldn't group?
 

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When you say 3-4inch group it like a shot gun pattern or are you get 2 or 3 shot that group and the other fliers. What is your set up, scope, rings, bases, ?

Cliffy
 

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Discussion Starter #7
It might take a few more rounds before it settles in. The most recent .308 I bought was a little wild for the first 80 rounds, then it became more consistent and accurate. If you are using all factory ammo, you may need to try a few options and compare the grouping. Are you enjoying the recoil of the 300WM?
Haha yeah the recoil is fun I might put a break on it but I want to get it shooting first. Can more rounds through it improve accuracy that much? My 308 that I've been shooting for the past couple years shot good right from the get go. I reload for my 308 but I still shoot match three it just depends what I have more off I plan on doing the same with my 300 WM just wanted to shoot some match ammo through it because it's new and was excited to shoot it.
 

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Discussion Starter #8
Leupold mk 4 with m1 turrets stock 65 inch lbs ring caps 20 inch lbs rings to base nut 65 inch lbs.
 

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If it is 3" groups with Federal Gold Medal Match something is wrong. It is either shooter or rifle related. Given that the groups with the 308 are only sub Moa and not closer to 1/2 Moa I am willing to bet that the recoil is the issue.

On the other hand, it could be rifle related. Everything from a barrel not floated to improper torque on stock screws to loose scope rings to malfunctioning scope.

I know you said the core lokt shot better. How many rounds of each did you shoot? Was it one lucky group or a pattern of several 1" groups in a row. I would expect the core lokt to group about 1" at best, but the gmm should have no problem shooting 1/2" or better.

Did you shoot the core lokt first and then the gmm? What scope are you running? Did you go back to the core lokt after shooting the gmm? Is it possible that the recoil trashed the scope after shooting a few core lokt and then the gmm wouldn't group?
[/Leupold mk 4 with m1 turrets stock 65 inch lbs ring caps 20 inch lbs rings to base nut 65 inch lbs.
 

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I'd go over your gun with a fine tooth comb. I have 2 R700 LRs in 300WM. I had to take both back to the gun shop to have the chambers polished since neither one would eject spent brass. The gun shop told me that they've done a fair bit of warranty work on the Long Range R700s. From what you've described, I wouldn't be surprised if you've got issues with your gun and not your ammo.

Now that the chambers have been polished, both are sub MOA guns.
 

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Today after work I loosened action screws and put 10 more rounds of federal gold medal match and all 10 grouped an inch and a half or so. Maybe my torque wrench is a little off and I think it may just need more rounds through the barrel. I just was use to my 308 because it shot great right out of they box. Thanks for all the suggestions
 

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Today after work I loosened action screws and put 10 more rounds of federal gold medal match and all 10 grouped an inch and a half or so. Maybe my torque wrench is a little off and I think it may just need more rounds through the barrel. I just was use to my 308 because it shot great right out of they box. Thanks for all the suggestions
I have that rifle in 30.06 and it's real good shooter. I does a fine job at 1,000 yards on a 6'' plate. My Rem 700 P does the same at 1,000 yards and 1 mile.
 

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what torque wrench are you using? what weight did you torque the screws?

usually these should be torqued at 65 in/lb or less. 50 in.lb would be just fine. I usually torque mine to 65 because it is the same wrench I use for my scope rings.
 

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Discussion Starter #14
what torque wrench are you using? what weight did you torque the screws?

usually these should be torqued at 65 in/lb or less. 50 in.lb would be just fine. I usually torque mine to 65 because it is the same wrench I use for my scope rings.
I'm using the wheeler FAT wrench. I did 65 inch lbs but today I backed it down to 55 inch pounds and those 10 rounds I put through it today is a whole heck of a lot better. Still not where I want it to be but way better
 

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I'm using the wheeler FAT wrench. I did 65 inch lbs but today I backed it down to 55 inch pounds and those 10 rounds I put through it today is a whole heck of a lot better. Still not where I want it to be but way better
you might wana have it glass bedded it made a world of difference in my .300
 

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Two different bullets some guns just don't like certain bullets or could be the load. Before I started reloading my 7mm mag with Winchester ammo would shoot 5" groups then I switch to federal ammo and shooting sub MOA at 100. Guns are picky
 

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I'm using the wheeler FAT wrench. I did 65 inch lbs but today I backed it down to 55 inch pounds and those 10 rounds I put through it today is a whole heck of a lot better. Still not where I want it to be but way better
Any progress or update? I'm in the same boat - bought a R700LR in 300WM recently and can't get the groupings to be consistent at 100yds. Seems to like my cheapo 150gr Core Lokt best, shot some Hornady 178gr ELD Match through it today and was 3-4" groups - very inconsistent. My R700 308 SPS Varmint is a laser at 100yds with 168gr SMK ammo and a new Choate stock. Wish I could get this 300WM to be more consistent.
 

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Same deal here with my new Remington 700 LR in 300 win mag. I am VERY interested in what the solution is. Roughly sighted in at 100 yards, I then ran a box of Hornady 178 gr ELD Match through it 3 shots at a time, slow firing, waiting for cooling and not one round touched another, group of 20 about 4 inches. Couple of the cases were sticking in chamber too. Very dissatisfying day at the range. Brought rifle home cleaned it, went over everything, took barreled action off stock, cleaned up a couple spots on the aluminum bedding that had 'glass on them, reassembled and put it back in safe. Started researching... here I am.
 

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I have the Remington Long Range Stainless in 300 WinMag and it took a lot of stuffing around to get the Hornady 208gr ELD Match just to get to an inch groups consistently. This rifle was beating the crap out of me so I had my gunsmith thread it and install his muzzle brake and tune the X Mark Pro trigger which is now at 2lb and crisp. While loading for my wife's 308w RPR I loaded some 168gr Nosler CC over 73gr of H4350 and CCI 250 primers, well the accuracy couldn't be more different, 0.182", 0.186" and 0.189" (3 shot groups) average for the day was under a half inch at 100 metres. Guess that Remington barrel likes plain old vanilla flavoured bullets.

180A3614-Edit-2.jpg

Just a word on these; 1. Everyone will tell you not to worry about 168gr Match bullets, this is because they are likely shooting a 308, your 300WM has more horsepower and will stay supersonic to a 1000m. 2. Try different bullets, even the ones other people don't like in their rifles as yours may love them. 3. Get a brake and fix the trigger, at least then you will be able to test your loads without getting beaten up. I found 20 rounds were okay but more my shooting stated to deteriorate from the recoil.

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UBIQUE
RAA
 
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