Originally Posted by
rsilvers
It has not been proven that 1:11 or 1:12 twist has measurably less pressure than 1:10 twist, nor would I expect it to. Why would you want to give up bullet stability under extreme conditions of cold weather and when using a sound suppressor and give up the terminal effects benefit of a faster twist with certain bullets when there is no significant pressure difference?
Every SAAMI 6.8 barrel is able to handle a 78,500 psi proof round so really a SAAMI chamber can handle enough pressure for any reasonable factory load - which should all be under 60,000 psi anyway.
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