Geez Bob, I apologize for working up loads. Happens to be the only picture of my groups that I have. I'll delete it from my computer so you don't get upset. Feel better now?
I did just think of a picture that's on my web site. Here is Todd Spotti and one of his IRON SIGHT groups shot Creedmoor at 200 meters on a practice day at the Inland Silhouette Club in Redlands, CA. That's a full size ram, 12 inches from belly to back. The revolver is a Dan Wesson shooting cast.
Without a ruler I'll call that 3- 3 1/2 inches at 200, what would those same shots need to group at 50 to do that at 200? Hhmmm . . .