Originally Posted by azhector
a smooth shot is a mix between the lack of kick it has and its consistency. so you could say a tippmann or autococker is smooth if you get straight shots off since there is 0 kick on it due to the weight. a pretty good way to judge the smoothness of a marker with no human error (if you want to) is hook it up to a rig that holds the gun in place and take shots at a board x feet away, the closer your extremes are, the "smoother" the shot.
A smooth shot is generally based on the user but is usually measure by the barrel rise on the gun. There are many videos called kick test where a user will hold the gun by the rear most part, behind the frame and pull the trigger. By balancing the gun on a finger essentially, you will see how far the barrel tip will rise from each shot. Yes, in general a smoother shot is not as efficient an vice versa