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Long Range Hunting & Shooting
270WSM vs 280AI vs 7mmRM
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<blockquote data-quote="budlight" data-source="post: 483103" data-attributes="member: 2939"><p>I Changed my above post to Chronos are correct and reloading books are generous on FPS.</p><p></p><p>The pointing is a natural Phenominon of throwing SP bullets in a tumbler full of your favorite moly coating compound. The bullets bang together and they all come out nicely pointed.</p><p></p><p>There are some smart guys on this forum. I don't have the program anymore. But you can plug in the chrono speed. I use the chrono 21 feet away from the barrel end to eliminate muzzle flash speed variations. Setup twin targets directly in line on a windless morning. set one at your 200 "ZERO" and the other out at 400 yards. Measure the exact bullet drop or even a shorter range like 100 and 200 yards for a slower low BC bullet.</p><p></p><p>You can figure out true BC. by plugging in the bullet weight, dia, ....... speed, and true bullet drop over a known distance</p><p></p><p></p><p>I've always wondered about recovered bullets that have these deep rifling grooves. That must make turbulent air flow?</p></blockquote><p></p>
[QUOTE="budlight, post: 483103, member: 2939"] I Changed my above post to Chronos are correct and reloading books are generous on FPS. The pointing is a natural Phenominon of throwing SP bullets in a tumbler full of your favorite moly coating compound. The bullets bang together and they all come out nicely pointed. There are some smart guys on this forum. I don't have the program anymore. But you can plug in the chrono speed. I use the chrono 21 feet away from the barrel end to eliminate muzzle flash speed variations. Setup twin targets directly in line on a windless morning. set one at your 200 "ZERO" and the other out at 400 yards. Measure the exact bullet drop or even a shorter range like 100 and 200 yards for a slower low BC bullet. You can figure out true BC. by plugging in the bullet weight, dia, ....... speed, and true bullet drop over a known distance I've always wondered about recovered bullets that have these deep rifling grooves. That must make turbulent air flow? [/QUOTE]
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270WSM vs 280AI vs 7mmRM
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