The brutality of recoil is dependent upon the mass of the propellant charge. A magnum case containing let us say, 66.0 grains of powder, is going to have you asking yourself why did you not go with that standard case and its 44.0 grains of powder. I had a nineteen-pound rifle that used powder charges as high as 70.0 grains. Its weight helped to tame the recoil, but a long afternoon in the desert eventually got me to begin flinching after dozens and dozens of rounds. I had a nine-pound rifle that fired 250-grain slugs of .358 inches in diameter. Its powder charges were 60.0 to maybe 67.0 grains. It kicked so hard, I had to put it up after only about twelve rounds...