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Post by blasternank on Dec 27, 2014 11:47:02 GMT -8
I think I am going to go into the heavy metal arena and start with the 308. What length barrels are most using? Twist rates? What about gas system length? I'm thinking rifle length but am a little unsure. Any input would be nice!
Thanks.
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Post by GLSHOOTER on Dec 27, 2014 13:45:12 GMT -8
I think I am going to go into the heavy metal arena and start with the 308. What length barrels are most using? Twist rates? What about gas system length? I'm thinking rifle length but am a little unsure. Any input would be nice! Thanks. I shoot an M1A in HM but if I were going AR10 I would go for an 18" mid 1:11. It will do anything that you are challenged with IMHO. I'd also run a very effecient muzzle device on it. Greg
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Shadow
Junior Member
Posts: 21
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Post by Shadow on Dec 27, 2014 20:59:34 GMT -8
I think I am going to go into the heavy metal arena and start with the 308. What length barrels are most using? Twist rates? What about gas system length? I'm thinking rifle length but am a little unsure. Any input would be nice! Thanks. I shoot an M1A in HM but if I were going AR10 I would go for an 18" mid 1:11. It will do anything that you are challenged with IMHO. I'd also run a very effecient muzzle device on it. Greg I'm going to Piggy back on what Greg has to say here. If you already own an AR in 5.56 that you have put many rounds downrange with (.223 being much more cost efficient to train with), I would strive to make the .308 platform as similar to that as possible in both feel and performance. I would also follow the recoil reduction recommendations set for by Greg. A mid-length gas system will provide smoother operation and a muzzle brake will decrease felt recoil. you might also consider the Shooting innovations buffer/recoil reduction system that is mentioned in the "Accessories and Parts" section of the BHW forum, or the silent capture system by JP enterprises. I have not used the Shooting innovations system, but I have used the JP silent capture buffer (both similar in design and pricing) and can say that they do wonders for operation and recoil management. Lastly, I would consider the weight of the bullet you'll be shooting. You may want to stick with lighter projectiles that have less pushback such as the 155's or 168's at the upper limit. I know we're splitting hairs here, but every little bit adds up, especially when you're shooting .308 for speed and accuracy. Good luck with your build, and good luck in your future competitions!
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