DL
As far as I am aware of the muzzle brake is of SSK own design (fish-gill side to side). I have them added to all my SSK barrels. Some of my earlier smaller caliber barrels have their arrester brake which work well that said, I prefer the fish-gill it really tames the recoil.
As I think about the recoil, I struggle to offer a comparison to something else. Does it snap / turn my wrist? No, like other chamberings setup in the same fashion I find the recoil to come backwards with some lift off the rest. The weight of the complete gun is 8 pounds with a barrel diameter of .988" before the brake. I believe between the two (weight and brake) allows for shooting these big bores effectively. The pachmayr Encore grip doesn't hurt either, it's a shame they discontinued them. I also ware impact gloves to aide in my grip and offer extra padding while on the bench and in the field.
Hope this helps.
Damon