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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
How do I get the BC for a bullet whos maker dosent even know????
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<blockquote data-quote="Long Time Long Ranger" data-source="post: 278028" data-attributes="member: 505"><p>I do two chrono's. One at say 15' in front of the muzzle and the other downrange at a known distance. Once you have the velocity at two known distances you have your true BC. The BC will change slightly as the bullet loses velocity downrange. In other words you will get a slightly different BC from 0-500 yards than you will at say 500-1000 yards. If I want to know the BC at a certain velocity range I load it down to that velocity instead of shooting over a chrono at a 1000 yards. Hope this little soundbite helps a little.</p></blockquote><p></p>
[QUOTE="Long Time Long Ranger, post: 278028, member: 505"] I do two chrono's. One at say 15' in front of the muzzle and the other downrange at a known distance. Once you have the velocity at two known distances you have your true BC. The BC will change slightly as the bullet loses velocity downrange. In other words you will get a slightly different BC from 0-500 yards than you will at say 500-1000 yards. If I want to know the BC at a certain velocity range I load it down to that velocity instead of shooting over a chrono at a 1000 yards. Hope this little soundbite helps a little. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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How do I get the BC for a bullet whos maker dosent even know????
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