Stay away doing it by the numbers, you want "ONE" number. Draw shoot, all in one smooth motion.
You dont want to get into the habit of counting.
Grab the gun, drawing it, bring it to the target, get on the trigger and shoot but all is one motion, not four.
Slow at first, speed up when you can, but one smooth motion.
CPT USAR Ret
USAMU Sniper School Oct '78
Distinguished Rifle Badge 1071