http://en.wikipedia.org/wiki/Longest_recorded_sniper_kills
The one that really impressed me was the .50-90 sharps @ 1406m in 1874. That's astounding for the time period and rifle used. I wouldn't think a round nosed .512 caliber bullet would have a great BC, even at 600 grains (BC calculator estimates a BC of around .327-slightly better than a 123 grain 7.62x39 bullet, but fired at a lower velocity.)
I would roughly equate that to shooting an SKS/AK47 over 1km, as far as wind drift goes, with significantly more drop, since a black powder load probably wont be pushing a 600grain bullet over 1200fps.
The one that really impressed me was the .50-90 sharps @ 1406m in 1874. That's astounding for the time period and rifle used. I wouldn't think a round nosed .512 caliber bullet would have a great BC, even at 600 grains (BC calculator estimates a BC of around .327-slightly better than a 123 grain 7.62x39 bullet, but fired at a lower velocity.)
I would roughly equate that to shooting an SKS/AK47 over 1km, as far as wind drift goes, with significantly more drop, since a black powder load probably wont be pushing a 600grain bullet over 1200fps.