I really do enjoy shooting the little Tenn. .32 flinter I bought from Jim Chambers a while back. Some of our targets are out from 90 to 109yards and the little rifle rings them more times than not. I'd like to be able to say the misses are the rifle's fault, but there are times the shot 'breaks' and the sights are high, low, on one side or the other.
With a load that shot 50% larger at 50 yards than the one I finally ended up with, the rifle gave me a 3" rest group(single bag) at 100 yards on an 8" bull. I was happy with that, considering tghe load used wasn't as accurate the load as I finally accepted as being the best. It took a number of targets to decide that load, but overall, it averaged 1/2" better. If that load allows me to shoot a 2" rest group at 100yards with that little 42gr. ball, I'll be not only astonished but MOST pleased.
If I was going bunny hunting, I'd probably grab the .32. If going out for anything that's legal in vermin category, I'd take the .40.
The little calibres are fun. Our new range has a nice mature bush trail walk that we are designing for squirrel rifles - .40 and smaller. By mature bush, there is little undergrowth, nice open lanes for shooting and lots or fairly large Spruce trees with some Fir.