I was shooting some .38 spl I'd loaded in an S&W model 36-10: 4.5 gr. W231, Berrys PFP 125 gr bullets, Remington Small Pistol primers. Near the end of the second box I had a sequence that went like this:
Bang. Bang. BANG!! pop.
Uh-oh.
I opened the cylinder, and sure enough there was a...