.454 Casull in a Ruger Alaskan. Can't imagine having any fun with something stouter. I can shoot 2" groups at about 75 feet, tops. I hope that's good enough, 'cause I'm not getting anything bigger.
If you think preparedness is expensive, try 'winging' it.
NRA Endowment Member (Life Member since 1976) Idaho State Rifle and Pistol Association
