How bout I just bore sight the damn thing in....I usually put it pointing out a window at night when it is dark and zero in on the neighbor across the street while he watches television. I figure that to be close to 100 yards.
It is usually within a few inches....so that leaves me 20 kills.....maybe not clean ones....but a little bloodshed and tracking is good for skills as well.
Sorry to hijack your thread Tom.....sort of at least.