308 with 1-12 twist

[Baddog0302]

Sometimes when I start to think "WHY did they do that" I get a serious head ache ???
Looking toward Christmas for my Left handed son and see where Rem. offers their LH heavy Bbl. in 3908 BUT with a 1-12 twist. Dosen't that limited the bullet length to that of 168 MK's in the match series of bullets ?

 

[FroggyOne2]

Nope.. You can shoot up to 185BTs with ease.

 

[whiskey08]

your fine, they say you need a 1-10 twist when you get around 210grs. good thing bout your 1-12 is you can shoot 190's to 155's.

 

[jmatters]

For short range work, 155 BIBs. For 600, 187 BIBs! Both are 10 ogive, flat base, and stabilize great out my 12 twist .308. Only problem is getting some!

 

[Baddog0302]

Thanks , \
J Matrers ??? BIB ?? Berger ?????

Semper Fi

 

[jmatters]

Sorry. BIB = Ballistic Idiot Bullets; http://www.bibullets.com/about/. Randy Robinette makes some awfully consistant projectiles. Especially for the .308.

 

[Obtunded]

There isn't a bullet you can successfully fire from a 308 that requires anything more than a 1:12 twist. That twist handles 210 grain Bergers just fine. I shoot with a fellow that shoots 155 Sierras in FTR competition with a 15" twist.

I fail to understand why 10" twists are standard on so many 308 rifles. they produce a huge amount of unnecessary torque, and that affects accuracy.

 

[boltgunluvr]

I've got a Rem 700 SPS Varmint and it shoots anything. Not fabulous, but very good. Just remember to adjust your powder selection per bullet weight. Oh yes...I've been told IMR & H4350 are way too slow for .308...was told not to waste my time. I loaded a few rounds to see what would really happen. I don't expect anyone to believe this, but my gun loves 168 SMKs with a healthy dose of IMR or H4350. Remember its a 26in barrel so I'm assuming thats the reason. Completely blown away by this. Anyone else have any info on this????

 

[boogershooter]

Yeah ,I have a Mark King smithed .308 ,1 in12, 26"ish Broughton.... 4064 with 175 SMK .It outshoots me. Shoots about everything ya put in it well. I have to side with Obtuned, I Dont see a reason to do 1 in 10....but then again I am no expert.

 

[Kenny474]

I think the 1-10 is due to the .308 being so popular for hunting, and most hunters use a reasonably heavy bullet and usually in cold weather, and occasionally in really cold weather. The faster twist will help stabilize the heavier stuff in the extreme cold, so I would tend to think that has a lot to do with it. I may be wrong, but it seems logical.

Anyway, my .308 has a 1-10 and shoots just fine, though it is just a hunting rig. If I was going for long distance, I could see the extra twist being an issue as it would slow down the bullet a bit. But for general use, the 1-10 is ok with me.

 

[Obtunded]

weight has nothing to do with stabilization. Stability requirements are based on the length and velocity of a bullet.

 

[Kenny474]

weight has nothing to do with stabilization. Stability requirements are based on the length and velocity of a bullet.

Yes, I am fully aware of that. But as a bullet gets heavier, it usually gets longer as well. So, while not directly related, they do go together. I guess I should have stated they usually use long bullets, as that wouldn't have left any gray area.
I figured most here understand that stabilization requirements are based on length and velocity and that most could relate a heavy bullet to a longer bullet.