I'm trying to make a final decision.   The .32-40 would be interesting.   But, I don't reload so the .32 Winchester Special may make more sense towards ammunition availability.   I'm only going to hunt with it not compete, so the Special may make more sense.   Inputs appreciated.

Yes, I already own a .38-55.   Love it.   In addition to my muzzleloaders my rifle battery consists of:

.250 Savage Ruger No. 1
.348 Winchester Browning 71
.38-55 Winchester 1874 Sharps Saddle Rifle
.45-70 Ruger No. 1

I placed a Model 1885 on order with C. Sharps because I like single-shot rifles and always thought the Hi-Wall was a handsome rifle.

Donna at Sharps tells me I need to decide on the caliber quick, hence the questions here.   Thanks.

For a non reloader guy, might as well just get it in .30-30 and have tons of over the counter readily accessible ammo.

I hunt from a ground hide, generally backed up in scrub cedars, shots 50-100 yard shots.took a small buck with 8.15x46r with 185 gr gas check cast bullet which for all practical purposes a slightly shorter 32-40. 
Mike

Go with the .32-40. You are buying something YOU want and spending fair money. You’ll be satisfied and might find ammo easier than I’m finding primers.