Howdy
Rick pegged it! Everyones dream calibre would be a 230gr at 1500fps with the recoil of a .22! For known distance just adjust for your load. The guys that I know that shoot bullseye use the 185 Nosler and swear by it. I'm not into long range shooting with my .45, I like to miss my targets up close and REAL fast. Some would say I can miss faster than anyone else in my club!
Have fun and shoot safe!
L8r
Conley