I've got a .50 Disc Elite with a Nikon Omega 3-9 on it, it will cut one hole at 75yds with several different loads, and does almost as good at 100. Just picked up a KRB7 Rolling Block about a month ago. Haven't had much time to play with it yet. I've got an Omega scope on it too. The barrel on the KRB is much tighter at the muzzle than the Elite, so tight that I can't hardly load any sabots in it. Once it's past the muzzle about 2" or so, it slids right home. I may have to check out PowerBelts or some other conicals in it. I like the rifle quite a bit, it handles great and feels good. Trigger is pretty good too.