200gr SMK for .308 - Page 3

200gr SMK for .308

This is a discussion on 200gr SMK for .308 within the Reloading forums, part of the Sniping Related category; Originally Posted by Gunguy308 I have not changed my seating die, since its not a compressed load im not getting and deformation of the bullet. ...

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Thread: 200gr SMK for .308

  1. #21
    Senior Member straightshooter1's Avatar
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    Quote Originally Posted by Gunguy308 View Post
    I have not changed my seating die, since its not a compressed load im not getting and deformation of the bullet.
    I was thinking about it more in terms of maintaining good concentricity rather than deformation.

  2. #22
    Senior Member Gunguy308's Avatar
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    Quote Originally Posted by straightshooter1 View Post
    I was thinking about it more in terms of maintaining good concentricity rather than deformation.
    As a new reloader I'm not sure I fully understand your concern. The seating stem is pressing on the bullet aprox .25" below tip from what I can tell.

    Sent from my VS995 using Tapatalk

  3. #23
    Senior Member straightshooter1's Avatar
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    Quote Originally Posted by Gunguy308 View Post
    As a new reloader I'm not sure I fully understand your concern. The seating stem is pressing on the bullet aprox .25" below tip from what I can tell.
    I've heard from some who reload the XLD type bullets (I've not used them) that due to this design, how it fits into the seating stem, it tends to have a wide variance in run out when using the standard seating stems. So they use a special or custom seating stems to tighten that up. Given the design of this bullet, I would think it would have much the same issue. But, can only really tell buy measuring the concentricity after loading to see if one is getting a run out of more than .002. I like to like to keep my run out at or close to .001. . . or less, which I think would be a good idea when firing these out of a 1:10 barrel.
    Last edited by straightshooter1; 05-13-2019 at 08:19 AM.

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  5. #24
    Senior Member Gunguy308's Avatar
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    Thanks for the heads up if I start getting some odd results I'll definitely look into this but for now I'm not shooting far enough where it's really making a difference if it's happening.

    Sent from my VS995 using Tapatalk

  6. #25
    Senior Member Gunguy308's Avatar
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    Quote Originally Posted by Martino1 View Post
    Dang that's a long and skinny pill. I notice the shallow taper of the boat tail on the skinny.. I'll be interested to see if you can actually reach out to 1500-1600yds with precision. My 308 barrel is a 1/10 on my DT. Let me know how the LD tests come out. I may have to try these heavy SMK's in my 308. I thought 175SMK's were it for 308..
    Federal has a factory 185gr Juggernaut load for .308, and sierra has a 190gr MK that I'm sure would work well.

    Sent from my VS995 using Tapatalk

  7. #26
    Senior Member straightshooter1's Avatar
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    Was thinking about trying some of these new 200 gr pills. But after taking some measurements, I find I will only be able to eject a live round (COAL will be too long) by removing the bolt, which would be a particular hassle with a RPR. That, together with only being able to hand feed the cartridges, doesn't look very appealing.

  8. #27
    Senior Member Gunguy308's Avatar
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    Quote Originally Posted by straightshooter1 View Post
    Was thinking about trying some of these new 200 gr pills. But after taking some measurements, I find I will only be able to eject a live round (COAL will be too long) by removing the bolt, which would be a particular hassle with a RPR. That, together with only being able to hand feed the cartridges, doesn't look very appealing.
    I have not had the issue of ejecting a live round. Mine are at 3.100" COAL, yea hand feeding is kind of a pain but for real long range I'm personally good with it.

    Sent from my VS995 using Tapatalk

  9. #28
    Senior Member straightshooter1's Avatar
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    Quote Originally Posted by Gunguy308 View Post
    I have not had the issue of ejecting a live round. Mine are at 3.100" COAL, yea hand feeding is kind of a pain but for real long range I'm personally good with it.

    Sent from my VS995 using Tapatalk
    I can't even get a 3.050 COAL cartridge out.

    I guess the solution is never having to eject a live cartridge.


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  10. #29
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    Quote Originally Posted by Gunguy308 View Post
    Federal has a factory 185gr Juggernaut load for .308, and sierra has a 190gr MK that I'm sure would work well.

    Sent from my VS995 using Tapatalk
    I know there are other choices out there, I thought I had the farthest reachout with the 308 win by using a 175 SMK. I thought that beyond the 175gr weight I'd be facing diminishing returns by increasing bullet weight. I just hadn't heard of anyone going that past 175-185 for the 308 win. I'm really interested in hearing how that puppy performs past 1000yds. I have 230gr Bergers waiting for Lapua 300NM brass. The thing is I've gotten assurance that 1/10 should be OK for 230's in a 300NM. Now I'm wondering...

  11. #30
    Senior Member Gunguy308's Avatar
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    Quote Originally Posted by Martino1 View Post
    I know there are other choices out there, I thought I had the farthest reachout with the 308 win by using a 175 SMK. I thought that beyond the 175gr weight I'd be facing diminishing returns by increasing bullet weight. I just hadn't heard of anyone going that past 175-185 for the 308 win. I'm really interested in hearing how that puppy performs past 1000yds. I have 230gr Bergers waiting for Lapua 300NM brass. The thing is I've gotten assurance that 1/10 should be OK for 230's in a 300NM. Now I'm wondering...
    I just looked at the Bergers and the bearing surface looks pretty long for its weight compared to the new 200gr SMK. I think thats the issue, the 200gr SMK has a short bearing surface compared to its length, the Berger looks like it has more bearing surface.

    Sent from my VS995 using Tapatalk

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