Lattin1
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So I've got A-Max 208gr. bullets and Burger 220 gr. bullets. Figure thats enough mass to create the back pressure needed to cycle the carrier. Now I just need to know what powder and how much. Also, what primers to use and OAL. Anybody know this stuff or have a link to this kind of info?
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Here's an interesting article on the topic. http://www.thetruthaboutguns.com/2013/10/daniel-zimmerman/the-truth-about-barrel-length-muzzle-velocity-and-accuracy/