That's not as bad as the time we watched a kid touch off his muzzle-loader, and fired his ramrod thru the 50 yard target frame - sideways. Bloodied him (LOTS of recoil from that big a projectile!) and mangled the ramrod.
After the big Civil War battles, many rifles were found with up to five or six loads rammed home - it seems the guys neglected to put caps on, and thought they were shooting, then just reloading . . . Scary.