50 caliber M2. Not much recoil but it is loud. I own a 375 H&H and, while not terribly punishing, that is about as much recoil as I want to deal with on a regular basis. I did chip a tooth while shooting it once. My dentist just laughed. He told me that is why he shoots a 30-06. Kind of hard for me to get past the 30-06 as well. I rarely hunt with anything else....
