I was at one of the biggest shot gun ranges in Pennsylvania the other day day and when i was done shooting we always talk and we started to talk about gun speed and of course i had no idea what they were talking about so i asked and they told me it was the time from which you think shoot until u pull the trigger, this in term effects how much lead you need because on the same target moving at the same speed i had 10-12 inches of my lead where another kid had 18-20 because his gun speed was slower than mine so i got to thinking how much does gun speed effect rifle shooting i can see where it would have great effect on moving targets but what about still targets because i would think when u think shoot u might have the cross hairs on the center of the target but by the time u pull the trigger and the gun goes off the cross hairs might be off....your thoughts please