The 327 fed and 30 Carbine are ballistic twins as well as the cases being very similar (I believe even the case OAL is the same). I've always thought 30 Carbine cases straight wall sized in a .327 fed sizer die then given cheap .32 ACP pistol bullets would make a very handy and easy to reload for rifle. You could possibly even use a .327 Fed chamber reamer and a 7.62x39 barrel. This would also allow the use of 30 cabine mags.
My only concerns with this are the chamber reaming and feeding of the long, thin, now straight walled cartridge. The 30 carbine's case does have a slight taper that starts about 1/2 way down, it's barely visible.