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I kind of knew the answer prior to posting, I mean like I said...I have to shoot for .05" off rifleing, but I was curious about the AR platform w/ regard to pressures and magazine limitation and all. I know the crimp is important w/ the autos and heavey bullets and I've only messed w/ bolts. The canalure being so far off got me second guessing myself.
I browsed the archives about this question and got more info than I need, thanks to all who posted.
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