Hi grapeshot,
Try haunting the gunshops and the auction sites in search of a T/C System 1. It's alot like a walnut &blueBlack Diamondbut with replaceable barrels. Among them was a .32 and a 12 gauge (you said something about a shotgun in your post). I've got one with both .32 and 12 gauge barrelsand love it. The .32 has the 1-in-48 twist and shoots PRB like a .22RF. I generally shoot very light 15 gr. loads of Pyrodex Pto duplicate .22RF performance and the thing will drive tacks all afternoon without cleaning.

My other .32 is a Cherokee which I cannot shoot nearly as well. The .32 System 1 has the heft and muzzle heavy hang of a full sized rifle and settles down on the target alot better than the muchlighter Cherokee, which seems more of a woman's or child's rifle. It also has better sights than the Cherokee. The Cherokee wins big in the looks dept. however.

Another nice thing about the System 1 is its modern safety. It's a couple of steps above the sidelock with its halfcock notch.

Earlier this week a used System 1 package with .32, .50 and .54 barrels went for $255 on Gunbroker. I've seen another listing where a NIB .32 barrel alone is listed for $250 (which is way high in my mind). You might check DGW or Natchez to see if they might still have a new System 1 in stock. Seemed like they were carrying them long after TC ceased production. Never understood why they weren't more popular.
Bob