Hunter,as far as ballistics there will be no change there but they get a bit louder.I have three guns with brakes on them now and they do the trick.You will always hear people say that that their to loud with the breaks on. when you shoot targets you should protect your ears with or without the brakes.most people dont wear hearing protection anyhow thats how brain dead they are.when your hunting you never really hear your gun fire. I know gander mountian gunsmiths install brakes for about 150.00.Most guys are not willing to spend any more on their guns than they have too.bigkentk