I'm with Redhawk. I've shot them with XTP's and wasn't pleased with them. It's hard to beat a cast bullet with a good sized meplat. I've used 300 grainers and 255. Either works fine, but have settled on a 255. Largest I've taken was a 255 "barr" at 90 paces. In one side ond out the other with a Lee, 255 RNFP. Bullet left the muzzle at slightly over 1,500 f/s from my Trapper.