I've fired my .444 Ported Outfitter many times on game, and can't see two cents worth of difference in perceived muzzle blast than when shooting under similar circumstances with the standard model .444. I've experienced no ringing in the ears post-shooting under hunting conditions.
I too greatly value what's left of my hearing, and when shooting off a bench, always use both plugs and muffs, regardless of what I'm shooting, just to protect my hearing. However, under hunting conditions and field experience in many types of weather, I've not found any adverse effects of firing my ported Marlin without hearing protection.
FWIW
God Bless,
Marshall
I too greatly value what's left of my hearing, and when shooting off a bench, always use both plugs and muffs, regardless of what I'm shooting, just to protect my hearing. However, under hunting conditions and field experience in many types of weather, I've not found any adverse effects of firing my ported Marlin without hearing protection.
FWIW
God Bless,
Marshall