I had to go check it out since my last post.....My clubs' patterning "plate" (as they call it) is 1/4" mild steel 50"X50" with an additional circular 2.5" piece welded in the center for aiming. Why it's that particular size is unknown to me. One shoots it and then paints it and then repeats. The plate is welded to 2 1/2" black pipe uprights which are welded to 10"X 30" channels about 1/4" thick (for feet on the thing)...all this keeps the plate center about 5' off the ground. I think it weighs about 9 tons.....We also had (until it got shot up too much)what they called a Patterning "Board" which was mostly like half a sheet of 1/2" ply wood suspended between two 4"X4" posts planted in the ground....I've been told by those fellows that know such things "that the steel one was for POI indications" and that the wooden one was to hang a piece of paper on to determine pattern density....I sure hope they fix the wooden one come spring....oh Yeah! I forgot that those same fellows pointed out that using paper on the steel plate gets a lot of bounce backs...Which I gather is not acceptable......fwiw....Art
