Normally I am limited to shooting paper at 200 yards; but recently at the end of a hog hunting trip I had the opportunity to shoot a little farther. I set up a homemade 10 inch metal target at an unknown distance and did the calculations. The target ended up being right at 450 yards. Hit the 10" plate four times before it fell down, then went for a closer look. The group size was about 1.5 inches; shot from the prone position with a bipod in front and a bag in rear. I'd really like to take it even farther; I'm shooting 168gr AMAX handloads at 2700 fps.
http://i1303.photobucket.com/albums/...psgxilwnkk.jpg
http://i1303.photobucket.com/albums/...ps6z8nhnox.jpg
The target was not on those yellow pipes during shooting I just hung it there for the picture.