So I was visiting a friend today and we started playing around with one of those laser trainers to see who could get the fastest draw, fastest "reload", etc. I started noticing that standing 10 yards away my semi auto was shining the laser about 2" high when the sights were held on the bullseye. Well that got me curious so I moved closer and eventually I determined that it was shining dead on at about 2.5 yards. It was low if I moved closer and higher if I moved further away.
As a mental exercise I tried to remember a couple ballistic calculations that I had learned years ago. I eventually determined that if that trend continued, my laser would shine almost 6" high at 25 yards and about 1 foot high at 50 yards. But here's the problem: assuming an average speed of 1150 fps, a 9mm will only drop a little under an inch at 25 yards. But...I have no problem hitting the target when i'm shooting live ammo, and my point of impact is damn near perfect with the point of aim. So I must have done something wrong. I just can't seem to figure out the issue. Any help?
Sorry for the overly technical question, I wasn't sure which board was most appropriate but I figure someone must know