6.8 twist - AR15.COM

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[ARCHIVED THREAD] - 6.8 twist

Posted: 3/3/2007 4:40:08 PM EDT

bottom line. which twist is the best for the 6.8 SPC?

I have seen 1-9.5, 1-10 and 1-11.

Posted: 3/4/2007 4:48:53 AM EDT

[#1]

Quoted:
bottom line. which twist is the best for the 6.8 SPC?

I have seen 1-9.5, 1-10 and 1-11.

1:11"

Posted: 3/4/2007 4:54:37 AM EDT

[#2]

Suggest you contact Tim Hicks @ ko-tonics he will explain the whole thing to you regarding 6.8 SPC and barrel twist/velocity.

http://www.ko-tonics.com/

Posted: 3/6/2007 4:57:33 AM EDT

[#3]

1-11 twist is the only way to go less pressure higher velocity.

Art-SSA

Posted: 3/6/2007 5:05:28 AM EDT

[#4]

I have had the best luck with 1:10.

Posted: 3/7/2007 5:52:06 AM EDT

[#5]

I'm happy with my 1:10 barrels.

Posted: 3/8/2007 1:55:40 AM EDT

[#6]

For all bullets normally used in this caliber (90-120gr) at normal velocities, 1:11" or maybe slower makes the most sense.

The only possible reason for any of the faster twists would be heavier than normal bullets shot sub-sonic for suppressed applications.

I suspect the faster 1:9.5" and 1:10" twists were only ever used for the 6.8 SPC because of the readily available blanks intended for use with 270 Win and MUCH longer, heavier bullets.

[ARCHIVED THREAD] - 6.8 twist

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