I regularly saw (and shot) 200 shooting IMSHA years ago. I shot standing and the scores were not nearly as good as the guys shooting freestyle. The targets are pretty large, too. Shot a few jack rabbits with Super Blackhawks and Super Redhawks out to 400 yards and prairie dogs out to 250 or 300 over the years, but not consistent at that range. Sometimes had to walk it in.
Regarding the 3" standard: I would think I could probably hold that to 30-40 yards offhand. Fortunately, my arms are just long enough for my vision to clear up to get a good sight picture but not as clear as it once was in low light. I for some reason shoot a handgun offhand about as well I shoot off a rest. Not sure why.
