I was a Federal Agent too long and liked challenges. I went back to some of my old photographs of the Eddystone Rifle plant and I think I found the "500" yard outdoor range. The 500 yard outdoor range is probably to simulate 500 yard fire. I found the cross target too good to be true for an actual 500 yards. I wish I had an old service that got that kind of groupings at 100 yards let alone 500 yards! The first photo is of the Baldwin Locomotive Administration Building with the old Eddystone Rifle Plant in the background. This photo was in the 1920's.Attachment 121845