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the ammo wasa 3/4 to 1 pound metal slug,some 1/2 inch steel pipe,and some pvc ammo that works pretty good
what you do is take 1 1/2 inch pvc and cut it to short lengths(or whatever length you want) ,put duct tape over one end,than fill it with whatever you want.gravel from beside railroad tracks or sand works good.anyway,you put it inside,and put duct tape over the other end.
It perfectly fits a sch 40 2inch diameter barrel,and makes a great replacement for potatos.depending on how big you make them,you can make a ton from a 10 foot long piece of 1 1/2 inch pvc. it punches through 3/4 inch plywood no problem and somtimes leaves almost perfectly round holes




