Its not commonly known but you can own a blackpowder/antique gun in fully functioning order if it is considered to be an obsolete caliber...old duelling pistols...pinfires...pepperpots....muskets!!!!! you could buy a wallhanger/boxed pistol then get it xrayed to make sure its safe...commision a mould for the ammo buy some pyrodex p synthetic black powder substitute (legally) and some caps if needed.....and you'd be legally equiped with a functioning gun....the minute you loaded it you would be liable to a five year jail sentence though.
or if you didn't want to go to the expense of having a bespoke mould made for the ball's you could buy the nearest size under and use an extra thick patch....the lead balls can be bought ready cast in a huge range of sizes....tis a dear way to go about having a functioning gun in your possesion but it requires no paperwork or involvement from tptb which i know a lot of you are paranoid about....much easier to just go the section 2 shotgun route and it would be a much better tool in a shtf scenario.
or if you didn't want to go to the expense of having a bespoke mould made for the ball's you could buy the nearest size under and use an extra thick patch....the lead balls can be bought ready cast in a huge range of sizes....tis a dear way to go about having a functioning gun in your possesion but it requires no paperwork or involvement from tptb which i know a lot of you are paranoid about....much easier to just go the section 2 shotgun route and it would be a much better tool in a shtf scenario.
Nothing is fool proof for a sufficiently talented fool!!!!