I have hearing damage from shooting too much already. Can't stand practicing with a break. You can't be proficient with a weapon if you don't practice.
I have never witnessed a negative outcome on a big game animal with a 6.5 beyond 500 from a competent marksman. I couldn't even count the number of wounded animals I have witnessed from archery and muzzleloaders or from people taking running shots at closer ranges with a rifle.