Somewhat like sizing .38 S&W cases by using a .38 Super die. Not exactly the same as a .38 S&W die, but close enough. I have sized .38 S&W cases that way for over 50 years. For a long time, I reloaded .45 Colt with .45 ACP dies and that also worked OK. Except I could only partially resize the .45 Colt case. Later I found a .45 Colt die set at a gun show for $10. You can usually make do with what you have available.
It looks to me that either .32 ACP or .32 S&W dies should work fine if one uses .30 SC cases. I would probably use .32 S&W dies, 0.003" smaller diameter. I have both die sets but no .30 SC or 7.65 Long cases to try them with.
Donnelly's manual gives the 7.65 Long case dimensions as 0.776" long, 0.335" diameter, no case taper. Max COAL is 1.198". The recommendation is to make cases from .32 S&W Long by shortening the case, turning the rim flush with the body, and cutting an extractor groove. Of course, that step is not needed If one starts with Starline brass. Load recommendation is 2.3 grains of Bullseye with any cast lead bullet. Bullet diameter given is 0.309", same as .32 ACP. MV given is 1000 ft/sec. I would probably use .32 ACP bullets and load recipes, at least to start with.