308 twist for 200gr smk 210gr smk and 208gr A-max

[nmsheephunter]

I have a 1-12 twist, I am hearing conflicting information regarding using these two bullets in the 1-12 twist. It is a 26 inch douglas xx chrome moly barrel on a trued remington 700 action. Some guys are telling no, and some are saying no problem. Do any of you have experience with these bullets in a 1-12 twist?

 

[RotARy15]

Re: 308 twist for 200gr smk 210gr smk and 208gr A-max

I have no direct experience but to my knowledge, it is a toss up. A 12 twist with a 26 inch barrel might like all heavy bullets, or it might like a few, or maybe it doesn't like anything.

You have to try if you want to know.

 

[Sonic Crack]

Re: 308 twist for 200gr smk 210gr smk and 208gr A-max

Call Douglas and ask them. I say you need a 10 twist for those weights

 

[Niles Coyote]

Re: 308 twist for 200gr smk 210gr smk and 208gr A-max

Get your lengths here
http://www.jbmballistics.com/ballistics/lengths/lengths.shtml

Enter your info here
http://www.jbmballistics.com/cgi-bin/jbmstab-5.1.cgi

Ideally you want your stability rating to stay above 1.4 but I have had good luck with bullets that scored 1.1, several members here are shooting 208’s in 12 twist’s but I personally have not tried it. Look up some posts from Montana marine, here is a good one.

http://www.snipershide.com/forum/ubbthre...481#Post1299481

 

[nmsheephunter]

Re: 308 twist for 200gr smk 210gr smk and 208gr A-max

Thanks Niles Coyote I will take a look at the calculators.

 

[winxp_man]

Re: 308 twist for 200gr smk 210gr smk and 208gr A-max

I would go with a 1-10 for sure.

With my 20" SPS Tac and 175 is ok but heavier (180gr) is does not stabilize at all.




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