Hello Dave,
Yes, the Lee Factory Crimp Die in 32-20 is the way to go.
It is a collet which puts the crimp in the case, only pressure on the crimping point as the shell holder is what activates the collet.
Not the Carbide Factory Crimp Die, a complete different monster. This one crimps the bullet, then resizes the cartridge as it exits the die to eliminate any bulge.
AntiqueSledMan.