HI
Just wondering if you can mathematically calculate a projectiles BC from it's physical measurements??
Was talking to the local custom projectile maker about my 30 BR order and I told him about my 20cal barrel troubles. Mentioned I was making a .224 cal now- he said he had some "long jackets" that would make a great FBHP in about a 57-58 grain weight with close to an 8 ogive. Would I like to try some??
So far I know it's .224, assume 57.5 grain, FBHP and assume 8 Ogive.
What other info do I need to rough out a BC???
I'm not looking for 4 decimal places calculations-
But something so I can put the measurement into a ballistics calculator to get some expected results to test against.
Thanks
later
P
Just wondering if you can mathematically calculate a projectiles BC from it's physical measurements??
Was talking to the local custom projectile maker about my 30 BR order and I told him about my 20cal barrel troubles. Mentioned I was making a .224 cal now- he said he had some "long jackets" that would make a great FBHP in about a 57-58 grain weight with close to an 8 ogive. Would I like to try some??
So far I know it's .224, assume 57.5 grain, FBHP and assume 8 Ogive.
What other info do I need to rough out a BC???
I'm not looking for 4 decimal places calculations-
But something so I can put the measurement into a ballistics calculator to get some expected results to test against.
Thanks
later
P