Surprised, I'm sure. Then dead and feeling nothing. Mine was a C. Sharps Arms rifle and I used the original style 500 grain slugs. I used 7 or 8 grains of Bullseye behind 120 grains of black powder. The Bullseye (a modern pistol powder) gave you a more complete burn of the black powder which was something they didn't have in those days. Still, those big slugs have very little drift and once you have the range you can ring a steel plate with amazing consistency out at 1000 yards or even more. The original Sharps .45/110 and .45/120 weighed about 19 pounds. The modern ones weigh about 12 or 13 pounds. Unless you custom order the gun, you still get that narrow, curved steel butt which hurts like hell! But, it's worth it when you pull the trigger, then hear that gong ring a few seconds later. The .45/120 was a bit much once I got out of competition shooting, but I had another in .45/70 that I regret selling.