The first time that happened to me was with a Charter arms Bulldog and factory ammo, when the Bulldog first came out. At that time, RNL was about all you could get, so I took up reloading for the Special. Already had dies for .44 Mag, but I had to buy a .44 Spl crimp die. I used it.

I'm surprised that the instructions that came with your gun didn't warn about this. I'm sure my 325PD instructions warned about testing for this, and probably 342PD, as well. Neither of those guns is as bad as .357 Mag in an AirLite.

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Formerly Model520Fan