I'm sure you've seen the video of the Arabs test firing a Nitro 577 Tyrannosaurus Rex. The rifle flies out of his hands, breaks the glass doors behind him and drops him on the floor. He's crawling to the door of the shooting booth half laughing, half pleading for help.
A couple of years ago I saw the video and there was about 15 guys taking turns trying to shoot that monster. Only one of them had the brains to lean into the rifle. It was hilarious.
The Nitro 577 Tyrannosaurus Rex is more gun than my old body would want to hold.