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Hunting
Long Range Hunting & Shooting
Perplexed, need some pro advice
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<blockquote data-quote="Ckleeves" data-source="post: 2612177" data-attributes="member: 83259"><p>At 300 yards your gonna have a real tough time doing the "reverse math". With the 150 gr 50 Fps difference is worth .6" in point of impact at 300. So unless you shot a group with zero vertical then it's pretty impossible to get a accurate measure on velocity. </p><p></p><p>I used this method 15 years ago and it's a tough way of doing things. Like Lance said, beg or borrow a chronograph. If you can't then make sure your truly zeroed at 100, then shoot as far as possible (500 yards+) without dialing anything on a target tall enough to catch your impacts and then try the math again.</p></blockquote><p></p>
[QUOTE="Ckleeves, post: 2612177, member: 83259"] At 300 yards your gonna have a real tough time doing the “reverse math”. With the 150 gr 50 Fps difference is worth .6” in point of impact at 300. So unless you shot a group with zero vertical then it’s pretty impossible to get a accurate measure on velocity. I used this method 15 years ago and it’s a tough way of doing things. Like Lance said, beg or borrow a chronograph. If you can’t then make sure your truly zeroed at 100, then shoot as far as possible (500 yards+) without dialing anything on a target tall enough to catch your impacts and then try the math again. [/QUOTE]
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Perplexed, need some pro advice
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