Can't help with dies but will say that even if you find dies you will have a problem finding bullets. These Colt rounds, .32 short and long, were originally loaded with heeled bullets and later with undersized hollow based bullets just like the .38 , .41, and .44 Colt rounds. If he just wants to fire a few rounds I believe the .32 short Colt is still available, though hard to find. If he really wants to return this gun to active service the best bet would be to have it rechambered to .32 S&W long for which ammo and components are common. The Colt bores are the same .313" as the S&W round, just the chamber diameters are smaller for use of the heel type bullets. "Cartridges of The World" has the story on this round and is by far the best single reference book one should own.