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Hunting
Long Range Hunting & Shooting
BC question
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<blockquote data-quote="RCMSTER" data-source="post: 2905497" data-attributes="member: 54689"><p>So I bought some .257, 95 grain HHT bullets to shoot in my 257 roberts. After doing my load work-up, I settled on 43.5 grains of A4350, and according to Labradar, average muzzle velocity is 2914 fps with a SD of 15.6. When trying to plug the numbers in to my ballistics app, it's asking for G1 bc, but the only number I get off of Hammer is the G7, which is .196. Anybody know how to convert the G7 to G1? Thanks</p></blockquote><p></p>
[QUOTE="RCMSTER, post: 2905497, member: 54689"] So I bought some .257, 95 grain HHT bullets to shoot in my 257 roberts. After doing my load work-up, I settled on 43.5 grains of A4350, and according to Labradar, average muzzle velocity is 2914 fps with a SD of 15.6. When trying to plug the numbers in to my ballistics app, it’s asking for G1 bc, but the only number I get off of Hammer is the G7, which is .196. Anybody know how to convert the G7 to G1? Thanks [/QUOTE]
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