I am doing a ballistics presentation on 6 different shells ranging from target load to buckshot, I will fire them each throught the same shotgun at a target and I need to find a target that can reflect the diffrence in damage done by each. I had origionally planned on using modeling clay but now a week from the project due date the person that was going to supply me with the needed torso sized block (150lbs worth) no longer carries it. Does anyone have an idea of something that I can use for 8 different tests and costs less than total? I have roughly 3 days to aquire it if I am to do the testing in time for the presentation. I have looked into plywood but each impact would be just one big-*ss hole, I need each individual pellet to be reflected. Does anyone have any ideas?