I've fired a few boxes of the Georgia Arms Deerstoppers thru my GP100 and the recoil was pretty stout for a .357. It wasn't as bad as some .44 loads I've concocted, but it was pretty heavy nontheless.
is one of my favorite ammo sources. So when I got my .357 snubbie (an all-stainless 649 J-frame) I ordered their hottest .357 ammo, naturally. Don't know if it was a deer stopper or not.
Shot about 50 of them and saved the rest in case I ever need to kill an automobile or truck. Very stout in the recoil department.
By the way, I've always been satisfied with their ammo.