Safety
Spudguns can be very dangerous if built or used improperly. However, if they are respected, they can be great fun.
This is a dumb article...
Ammo Saftey
Some advise against shooting bolts, coke cans full of concrete, and other hard objects out of your gun; saying things along the lines of: "Anthing that is much harder than a spud can cause grevious bodily harm if shot at another person,or any animal for that matter." ...in acctuality, even a tater will cause "grevious bodily harm" if shot at another living being. There may be an increased chance of ricrochet when using sturdy ammo - use common scence, and don't fire non-shattering ammo at close targets.
Some caution should be taken with shooting loose sub-munitions, specificaly gravel or stones, with a sabot behind them - there is a significant probability of them jamming up, and the barrel being overstressed when the sabot tries to keep moving through the blockage, leading to a failure. Always wrap your lose projectiles in something - paper towls, old socks, and plastic bags are all acceptable.