I own two .50 caliber rifles and just bought a kit to make a .54 caliber. The first two are percussion lock muzzleloaders, and the .54 is a flintlock.

Bobert (who's a good guy) is thinking about stuff like this.

I'm not worried. Check out the price, for one thing. And each round costs a bundle -- see above! It's not the sort of thing you'd take out plinking or rabbit hunting (not even grizzly hunting!).

Yeah, it'll bring down an aircraft. IF you're good enough. Aircraft have also been brought down with a spear (really!).

These are sold as sniper guns -- Carlos Hathcock made a kill in 'Nam with a single shot from a .50 caliber machine gun at something like 2,000 yards. Target shooters who use them (and there a a few out there) are extreme long range enthusiasts.

I'm more worried about a punk with a cheap .380 handgun....