I took a caribou at 480 yards with a single shot through the neck with a .243 using 100 grain bullets. The only reason I took the shot was it was heading towards the trees and there was about 5 minutes of legal shooting time left (otherwise I'd NEVER take such a shot, but the scope and I were real good buddies that week, and I actually felt confident to make the shot). Anyhow, congrats on the gun, she'll serve you well. But do try to keep the shots under 300 if at all possible. And shoot it LOTS. I had shot over 300 rounds the week before I took the caribou, and my confidence at that time had never been higher or since then. Wish I hadn't of sold it.