I think different types of breaks would effect things as well. They do help a ton though. I had one on a 300 RUM and with it the recoil was about like a 30-30. It would absolutely knock the crap out of you without it.
But man are they loud. One day there was a yote crossing a plowed field about 700-800 yards away. I took 4 shots at him with that 300 RUM...almost took his nose off with one. Unfortunately I did permanent damage to my left ear because I wasn’t wearing hearing protection. It rang real hard for weeks and now just plain stinks. I can’t hear good at all out of it. So if you get one, please make sure and protect your ears. And tell the people around you to as well