I got it from a different forum. In my experiens these comments are very thrue. Well, ...given that everithing else is in good order
When you run a typical ladder test your incremental shots usually string in a vertical plane.When you hit a node the vertical goes away.Very near the top end of the node your shots will go to the right on you but as you keep going they will line back up and keep going up verticaly.
Because you were shooting 5 shots at a time you saw the typical horizontal shift as 5 horizontal shots instead of 1.
Your best accuracy and lowest extreme spreads will both be right below the shots that went to the right.
I always shoot facing the same direction so my shots go to the right.I have never checked to see if shooting in the other direction will string them to thre left.