My old man uses one for clay shooting, and i have stolen it a few times. He picked it up when he was in the states. Great bit of kit! It certainly helps you review what the hell you did wrong and is very easy to use. You can actually see the shot and the wad in the air so you instantly know how you are missing. You need to really make sure the gun fits and you are consistent with your mount, otherwise its a waste of time. Dad takes his iPad to some casual shoots and reviews the footage in between rounds. Cannot rate them highly enough.
Bookmarks