All I can say is, that is amazing shooting. When I first got into muzzleloading with the old Renegades and Hawken rifles, my friends and I were so happy with a three inch group at 100 yards, we grinned all day. Never did we dream someone would shoot 500 yards with that kind of accuracy.

Now I have read about civil war snipers doing similar feats of marksmanship and it always astounded me that they could pull that off. But to see someone shoot that kind of distance and with that kind of group, well that is amazing. Congratulations on a great day at the range. And just for your information, even with no witness, I would have believed your word.