I don't care what caliber centerfire pistol (rifle cartridge for hunting) you're a fool if you're NOT wearing heading protection. Muzzle brake or not, it WILL damage your hearing. I don't care if it's a .223 or 45-70 it's too loud. The .308 can easily be downloaded for recoil, and put a brake on for recoil. As for saying you won't be able to hear the deer. You don't have to wear them the whole time you're hunting, it's simple enough to wear a set of plugs around your neck, or a set of muffs on your head then slide em down. I CAN speak from experience so I'm not guessing here. I've got a .243, 7-08 and a .308 handgun. They're all equally loud.