Freedom Arms 44 or 454. The 44 can be loaded to a far greater intensity than than the factory loading or just use the 454. A FA 44 is just a 454 bored smaller which gives it more meat around the holes! I'm not a big guy by any means and I can shoot it accurately with a 2X Leupold to smack down any deer at 100 yards or more with either the 44 or 454. Both of mine are field grade wearing 7 3/4" bbls. Good luck!