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Rifles, Reloading, Optics, Equipment
Reloading
Is there a ballistic calculator that can................
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<blockquote data-quote="Pdvdh" data-source="post: 2672236" data-attributes="member: 4191"><p>I'm gonna presume you don't have access to a chronograph or a LabRadar. Since those are the best means of determining bullet velocity.</p><p></p><p>The answer is no. Not based solely on bullet drop and bullet weight. You at least need to know the bullet BC value on order to back calculate a bullet velocity with a ballistics program. And you'll need to know the air density at the time and location where you measured your bullet drops.</p><p>Even using a bullet's advertised BC value, understand that some bullets today are still marketed with incorrect bullet BC values. Some BC values error by more than 35% from their true value.</p><p></p><p>Also, determining MV by measured bullet drops using a ballistics program, even if you did have an accurate BC value for the bullet, is still fraught with potential for significant error. This has been documented. Because some of the bullets with the largest error in manufacturer BC value have based their BC values on measured bullet drops.</p><p></p><p>My suggestion. Find someone with a chronograpgh or LabRadar. See if they'll record a couple of bullet velocities for you.</p></blockquote><p></p>
[QUOTE="Pdvdh, post: 2672236, member: 4191"] I'm gonna presume you don't have access to a chronograph or a LabRadar. Since those are the best means of determining bullet velocity. The answer is no. Not based solely on bullet drop and bullet weight. You at least need to know the bullet BC value on order to back calculate a bullet velocity with a ballistics program. And you'll need to know the air density at the time and location where you measured your bullet drops. Even using a bullet's advertised BC value, understand that some bullets today are still marketed with incorrect bullet BC values. Some BC values error by more than 35% from their true value. Also, determining MV by measured bullet drops using a ballistics program, even if you did have an accurate BC value for the bullet, is still fraught with potential for significant error. This has been documented. Because some of the bullets with the largest error in manufacturer BC value have based their BC values on measured bullet drops. My suggestion. Find someone with a chronograpgh or LabRadar. See if they'll record a couple of bullet velocities for you. [/QUOTE]
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Reloading
Is there a ballistic calculator that can................
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