Ted's wisdom makes me smile, having done something similar at one point in time; still do when I want a minimal height 'creeper'.
Back before the 'puter program present reality, I was fair anal about patterns & such and shot & counted more than a few patterns for holes after drawing a circle centred over the thickest concentration of pellets using a Plexiglas overlay. I bought butcher paper by the roll and even a carrier for it, making it easy to tear off another sheet to staple up & shoot. It was a long time ago. It was a great deal of busy werk. What I learned mostly was that dif. wad designs didn't make much dif. in target loads & field experience [not the pattern board] taught me that it you want more thump farther out, use a bigger pellet.
Take Rocketman's advise, Dr. Jones work & gift to us all is an easy no-brainer with real & valid information obtained for much less effort.
A good grease plate makes a lot more sense than buying paper; its very easy to photograph [much better than paper] and clean with a paint roller on a stick for the next shot.
