I'm thinking of picking up a Remington 1858 Navy (.36 cal) and doing some modifying/tinkering.
I can get a conversion to fire .38 Special/.38 Colt (and I bet .38 S&W would work as well). IIRC the .36 cal bp barrels are actually closer to .375" so to get the best accuracy without using a hollow base or heeled bullet, the barrel should be sleeved to .357 so the bullet isn't just rattling down the bore.
I've never seen the process of sleeving a bore in person but as I understand it, the old barrel is drilled out to accept the sleeve. Could a sub-8" pistol barrel be done in a 16" drill press? Is it more involved than what I'm thinking?
And before anyone asks "Why?", the reason is because I bloody well can!