^ yeah, that's what my .458 does to me, that son of a gun is a freakin' artillery piece! 405gn moving slow is a nice kick, 500gn full power loads are downright brutal. The gun with the scope is over 12lbs also.
I have to bunch up a fleece jacket or something similar to pad my shoulder when I shoot the damn thing supported, it kicks so hard it torques your neck. It is NOT a prone gun! Offhand it's no problem, just a nice push but sitting or prone, just plain hurts.
We used to mess around when someone would bring their girlfriend around shooting, we'd be shooting 7/8oz loads in the 12g and would show her, look, it's not bad at all!
Then we'd slip a buckshot round in there and hand it off, looking back that was pretty stupid! Could have sworn them off guns for good, I'll never know. but it was still pretty funny...
I did get my wife to shoot the .458 win mag once though, she fired 2 rounds from it at the local rifle range. I made sure she was well prepared though, now she's got bragging rights.