I definitely double up on hearing protection when firing a Magnum rifle, especially a magna-ported one . Seriously, hearing damage is irreversible . Protect what you have. I know a Vietnam Vet who spent his tour on a PBR (Navy) firing the forward mounted Twin .50's with no hearing protection. Let's just say he has a real tough time with cellphones.....None of them are loud enough. VA denied his hearing loss claim as well. Wear your "ears" folks .