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Math Geek: Exterior Ballistics
JohnnyBGood
Member Posts: 1,443 ✭✭✭✭✭
I need downrange performance, out to 1,800 yards, for the .451 Whitworth muzzleloading rifle for research purposes. I'm willing to purchase a ballistic program, but two I have looked at so far are not usuable for black powder ("Sierra Infinity") or do not extend beyond 1,000 yards nor callculate ballistic coefficient ("Shoot Ballistic Program"). I need the program to calculate BC as this is a very important element in dowrange performance.
Can someone recommend a program that will work for me -OR- I thought maybe I could use the ballistics for a 45-70 500/550 grain bullet since it's diameter, weigth, length, shape, and muzzle velocity are very similar to the .451 Whitworth (the Whitworth is .445 diameter, 1.400" in length, and 530 grains).
Any thoughts by geeks or non-geeks alike on my options would be appreciated.
Thanks, John
Can someone recommend a program that will work for me -OR- I thought maybe I could use the ballistics for a 45-70 500/550 grain bullet since it's diameter, weigth, length, shape, and muzzle velocity are very similar to the .451 Whitworth (the Whitworth is .445 diameter, 1.400" in length, and 530 grains).
Any thoughts by geeks or non-geeks alike on my options would be appreciated.
Thanks, John
Comments
Geeky math on how to do it - http://en.wikipedia.org/wiki/Ballistic_coefficient
http://www.eskimo.com/~jbm/calculations/calculations.html
I fed the BC into Sierra Infinity because I was more used to it, but JBM also has a trajectory program that will go to extreme long range.