Hello Shootall
Thanks so much for the lengthly reply. Excellent thought, but finding a 48" square piece of paper is darn near impossible. I have a very old, as in 1960 sometime, roll of paper that I special ordered from Miller Printers, in Gt. Bend, Ks.,. My plan was to find the perfect load for a new Ithacca Model 280 , 20 bore.
Well, it is, or was, still in its' original paper until a few weeks ago. Started tearing some sheets off to fit a target board I built. They are 42" X ?? -- can't remember the other dimension. Sr. moment
May have to go to something like an old washer or dryer box, but they, too, are hard to find before someone beats you to it.
Bottom line, your idea I was aware of, but not in the context you presented. Thanks so much for your time. Hope you and yours are well, and enjoy a nice week-end!
God Bless
badshotlal