I'm interested in that answer, too.
I've got one on a Guide gun, and so far, it's held up. But, it hasn't had all that many run through it, yet.
Calculations on a 10-lb .375 with a 270 grain bullet at 2700 fps is 36 ft-lbs recoil at 15.4 fps, while my GG load generates 34 ft-lbs at 16 fps, so it's relatively even.
I hunt with the .45-70, but recoil is at a level where I don't sit and fire large amounts of ammo at one time through it, maybe 20 rounds.
