Ok...I finally realized my target shooting bench (which is my four summer tires on rims stacked with a piece of plywood on top) is never gonna allow me to shoot one hole groups cause its too darn wobbly. I went to the building supply store today and picked up a few pieces of 2x4 and a bag of 3''deck screws to get me started. I will try and take some pictures of my progress of this project as I go along.