Yes, but understand that while the flare part will go to any diameter, the step part has to be wide enough to accommodate the full bullet diameter to get the advantages of the straight seating. This is why Jim Watson said you may have to get Buffalo Arms to make one to suit your bullet diameter, or you can use the .32 mentioned by Mehavey. That gives me another idea, though. Just a minute while I head to the basement to make a measurement…
(Imagine elevator music of your choice here}
…OK. I'm back. I apologize for the wait.
What I have downstairs is a Lyman Multi-expander, a powder-through expander die for pistol cartridges. It costs more than the others because it comes with adapters for all common pistol chamberings, including .32 Auto, which uses the same bullet as the 32-20 rifle cartridge. The adapters are short, threaded things and there are two extensions provided that they may be screwed into, one being longer for reaching down into short cases and one being shorter for tall cases. So, I screwed the Multi-die into my Lee Classic Cast press to see if that short extension was short enough for a 30-30 case. It was not short enough for a .30-06, which, when I ran it up all the way, needed the die threads completely outside the press, but with a .308" case, which is just a hair longer than you 30-30 case, it worked great and left me with plenty of thread engagement. I stuck a 0.311" pin gauge in and it sat square and straight upright in the case mouth. Just what you need. However, rather than expend $34 on the Multi-expander, it looks like you can buy a Lyman M die for
32-20 for $20.25 (these are Midsouth prices; they are out of stock but Midway has them for $2 more) and that should work.
Call Lyman to verify the 32-20 die is right for your bullet diameter. They have several numbers:
800-225-9626
800-423-9704
860-632-2020
But I think that will work for you. The die threads may have to be screwed up a little higher in the press for the 30-30 case, but not too high for it to work.