I have one in 50 cal. The best group I've gotten so far is with the 460gr No Excuse conical over 70 gr of 3F powder. I have the Lyman 57 rear peep and a #17 front sight on mine. The first 3 shot group I tried with that load shot .28" at 75 yards. I want to try some other loads after hunting season but so far it shoots very well with most of the loads I've tried. I like it, you will too.