Just this last week I bought a new Vectrix. Long story short, I have a single pin slider that I switched from old bow to new. The 20 yard pin didn't move vertically, just had to move it a little left....So I've sighted it in @ 20, and stepped back to 30. Moved my pin to my 30 yard marker and let fly. Hit quite a bit high. Too high, actually, so I figured I must have done something wrong. Shot again, same thing.....So I moved it back down to 20 and BLAMMO, right in there.

This goes against laws of physics...So I don't know, maybe I am subconciously holding a little high or something, butI shot 3 arrows from 20 yards and 3 from 30 yards w/out moving my pin. All 6 arrows were in a golf ball sized group......I dunno.....Physics say there should be some drop there....but I was sure happy.