the opposing player would stop it and that would hurt a lot, i just wouldn't go into the feild against someone with that, it would just be stupid. also, have you even thought of the propellant you would need for something that big, and the propellant would rip apart a shell that wasn't at least 5mm thick, and something that thick wouldn't brak on someone, it would just hit them and break something, just go with pyros my freind