I have a .32 Pedersoli Frontier. Rate of twist is 1:47. I bought it as a caplock and later converted it to flint. Can switch back and forth by changing the lock and the touch hole liner / drum and nipple.

I found it to be a very finicky caliber and it took a bit of experimenting to find a good load. But a good one I did find. Haven't hunted with it yet.