Thanks Doc,
That is as I suspected. But I really was not sure how the chamber is configured at the leading edge of the cartridge in a revolver. I really have never seen a chamber cast for a revolver cartridge, nor a chamber reamer.
Based on my trials with the 327 last weekend, I bet I can get a decent charge of shot in the 41 mag case.
Especially as I do not have the 10 mm dies to work with and would have to scrounge up the 414 brass. Or is that just sour grapes?
Next weekend's project, 25 rounds with a round ball on top, and 25 with a gas check on top for the 41!