I have 7.62x39 dies on order and a lee 312 185gr mold gathering dust from a failed attempt at paper patching 8mm years ago. I'd like to slug the barrel to get a better idea of what I'm playing with. I see some people using 0.315 round balls, but I don't really want to spend $20 on a box to just use one round ball...If you bought a $20 box and have 99 balls laying around, maybe we can work a deal!