I know its not a rifle but a 3 1/2 magnum turkey load out of a benelli nova w/o the new comfort stock will hurt like a, well you know. It is rated with the higher end african magnum loads. I only patern about 5 rounds in the spring. The biggest load i've shot out of a rifle would be the weatherby .300 magnum, it hurt but not to bad. A 150 grains of powder in a black powder rifle is nothing to laugh at either. My biggest rifle is a .270WSM, its not bad. The funny thing is, when youve got a deer, turkey, duck, or whatever in your field of view, you dont feel a thing.