No experience with that specific caliber either, but a custom die from LEE costs a whopping 25 samolians and is easy to use.

As for paper patching, I've found about .010" is a good target increase. An increase from .416 to .423 might work, but would be on the thinner end I do believe.

The easiest solution {paper patching works GREAT but is time consuming} to obtain cheap plinking bullets is probably to simply get a heavy .44 Mag cast bullet, i.e. a .300 grain or so, and size in the LEE die to groove depth or .001 to .002 larger as long as your case necks have enough expansion. You could use the same die to size down .44 Magnum jacketed bullets, too. .429 to .423 for jacketed should be easy.