For me, the size of the pin really doesn't matter much. I like to shoot at a larger aiming point as the distance increases. Apple size at 25 yards. Pie plate size at 50 yards. Hat size at 75 yards. Large enoughspot so that I can see a little of the aiming point around the pin, and thus allow me to center the pin on the aiming point without having to guess where it is.

If your setup is all tuned, you should be able to shoot proportional size groups as the distance increases. For me, good solid shooting is 1" for every 10 yards of distance. So 2" at 20 yards, 4" at 40 yards, etc. When shots are not in this margin, I'm doing something wrong. Sometimes I can shoot tighter on a good day (I had one of those days yesterday ) - but I don't get too discouraged as long as I'm in the 10 MOA margin.

I have seen a lot of shooters get psyched out by longer distances. They change their form as the time of flight of the arrow increases. The only other shooter factor that comes to mind is the fact that it's easier to keep the pin and target both in clear focus at closer distances. For someone who qualifies for AARP benefits, a 70 yard target is probably going to be very fuzzy when focusing on a sight pin only three feet away.