Lets forget about trigger travel, trigger stop, etc.
What is critical in any shooting be it shotgun, rifle, or pistol is follow through.
With triggers we know after the trigger releases the sear, it has to be re-set prior to being able to fire the next shot.
Follow through hear means pulling the trigger, and holding it, don't allow the trigger to reset until you are totally recovered from the recoil and the sights are lined back on the target. Even if you are only firing one shot.
Don't properly it will eliminate any disturbance after you pull the trigger.
CPT USAR Ret
USAMU Sniper School Oct '78
Distinguished Rifle Badge 1071