Your 32 Winchester Spcl should have a 1 in 16 inch twist, which makes it suitable for black powder.
It also should have a .321" groove Diam. Which limits your bullet choice in jacketed bullets to 170gr.
I would look hard at Hornady's 170gr FP, as well as their 165gr FTX bullets.
The 32 Win Spcl is a good round that shoots well. Keep the barrel clean though because accuracy will go south fast with the -16 twist if neglected.
30-30 data can be used for starting loads, then work up.
30-30 cases can be resized, but must be fire formed.
