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Old December 28, 2019, 05:05 PM   #14
Bart B.
Senior Member
Join Date: February 15, 2009
Posts: 7,755
Originally Posted by reynolds357 View Post
Have you found better accuracy with 12 twist than 10 in 175gr and under?
Yes. It's a bullet spin rate situation.

So did Frankfort arsenal developing the 7.62 NATO round for M14 rifle's 22" 1:12 twist barrel shooting 30-06 weight bullets 100 fps slower than 24" Garand 30-06 barrels do. 308 Win commercial barrels had 1:12 twist.

If 150's are shot 2950 fps or more from a 30-06, a 1:13 twist is ideal.

Then there's the 7.62 Garands shooting 190's over 2550 fps in 24" 1:12 twist barrels that was the most accurate mid and long range match round.

Last edited by Bart B.; December 28, 2019 at 05:37 PM.
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