In my early years in the gun biz, I was pretty easy to talk into firing nearly anything. Between feeling like I needed to prove myself to the boys and the fact that some guys find it the height of humor to hand the li'l lady the Magnaboomer Loudenthumper and then giggle behind their hands like mischievous schoolboys as she steps to the line and flicks the safety off, I've found myself behind all manner of hard-recoiling beasts. I've shot assorted 10 gauge shotguns and a few .50BMG rifles, as well as less common ones, like .416 Rigby Ruger No.1s with heavy handloads; what was I supposed to do when someone asked "What's wrong? Chicken?"
After a few years of this, I finally stopped treating it like a dare. "No, I don't really want to fire your new .416 Weatherby," or "Thanks, I've shot plenty of .500 S&W already; I don't have anything to prove."
All through that time, I'd been bolstered by belief that "It's just loud and uncomfortable; the recoil can't physically hurt you." Except, as someone else with nothing to prove points out, over the years it most certainly can.