Stephen, Thank You very much for posting the pics, I appreciate it greatly.
Pic #1 is the rifle at the 500 yard gong and 24 pieces of fired brass in a loading bock with one remaining round sitting on the muzzle.
Pic #2 is a closeup of the five round group at 500 yards, with the bullets landing close to one another the last shots cancel out the splat from the ones ahead of it, it may appear to be a four shot group, but I can assure all there are five hits there.
Pic #3 is a five round group on the 400 yard gong, danged if it doesn't look like a three shot group ; ]
I'm having a blast with this bull barreled C Sharps 50-90, what a hoss, and damned if it doesn't knock the crap out of those gongs when it lands!