04-24-2014, 06:20 PM
Obviously, I want to put the 65G in the best light, and am jealous of any competing data, so let's just get that on the table now. Having said that, I intend to have very strong rationales, openly and objectively argued for my data.
What is the rationale for your SME's data about 7.62x54R? I'm skeptical that his BC is better than Sierra's, given that Sierra is actually tested, has a denser lead core that sheds velocity slower, and has a secant ogive. Got a link to his data?
I'm gonna go with 2550 fps for the 112gr 65G @ 0.523 BC (this is a conservative BC because that's the 2400 fps BC). Comparable 110-115gr 6.8 loads get about 2550 fps from a 16".
John
What is the rationale for your SME's data about 7.62x54R? I'm skeptical that his BC is better than Sierra's, given that Sierra is actually tested, has a denser lead core that sheds velocity slower, and has a secant ogive. Got a link to his data?
I'm gonna go with 2550 fps for the 112gr 65G @ 0.523 BC (this is a conservative BC because that's the 2400 fps BC). Comparable 110-115gr 6.8 loads get about 2550 fps from a 16".
John
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