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1:10 vs 1:11 in Stainless barrel

5287 Views 20 Replies 9 Participants Last post by  Colohunter, 
sharpshooter33
I've noticed a move to the 1:11 twist vs the 1:10. Is there a reason for this? I also noticed that it looks like from the test report that stainless tends to stay alittle lower on the pressure?

Anybody have any insight on this?

thanks
SS33
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Yes, the stainless steel barrels tend to produce less pressure, most likely due to the chrome.
The 1:11" also reduce some pressure, but a good 1:10"/SS/SPCII OR DMR chambered barrel is fine unless you are trying to get every last FPS out of the SPC.
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The SAAMI chamber is like the .223 chamber.
The SPCII chamber is like 5.56 chamber.
The DMR chamber is like the .223 Wylde chamber.

If I was in your shoes, I'd get one of the MK 16" uppers from AR15Performance.

The 6.8 SPC is best if used from 0-300 yards for hunting. If you want to go past that, I would get an AR10.
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