MEC,
The modified .32-20 cases are too short to gas seal like the original cartridges do. The Ruskie target ammo, and the pricey Fiocchi rounds, when loaded stand proud of the concave cylinder exits and go inside the inverted, ie, convex, 'forcing cone' at the barrel's end. My rounds don't make it that far... the Meisters are crimped on the top ring (double-ended!), leaving a small bit of lead proud of the case - but still below the cylinder exits. I have not seen any escaping gases/smoke from the cylinder non-gap while others are shooting my reloads, however. My 2.5gr of TiteGroup still won't break 700 fps... more work (Ugh, more powder!) is required there, I suppose.
I was at the range earlier today. I was amazed that my .32-ish Nagant loads were knocking the plates down, something my SS's .22 WMR wouldn't do (40gr @ 1,400 fps measured). The most fun is letting newbies 'experience' the Nagant... amidst repeated assurances that it really is a DA - just keep squeezing (20+ lb triggers are normal)!
I was going by my pusher today, but thought better... if he still has the 432, I may just have to take it home with me. Of course, it doesn't come with a seven shot cylinder, holster, cleaning rod, screwdriver, and cool umbilical cord, a la the Nagants.
Stainz