Good grief!
Found a clip of someone shooting one:
C Sharps 50-140 cal rifle...first shots.
https://www.youtube.com/watch?v=o2e71aD5bFI
Kind of hard not to develop a flinch when your rifle has the recoil of a 10 gauge mag.
I have a Siamese mauser 98 chambered in .45-70.Since the action is so strong I can fire some pretty stout loads safely.Like a Lyman 500 grain cast bullet at 1800 fps.That would kill the biggest grizzly that ever walked if you hit him in the right place.And yes,the recoil for that load is a challenge.