Gentlemen,

The Martini (310) Cadet's rim thickness acceptance tends to vary. I have one that works quite well with cases made from either 32-20 Remington or 32-20 Winchester cases. The other will only handle the thinner rimmed Remington cases, but not the thicker rimmed Winchester. The Kynoch 310 rounds have a thinner rim like the Remington 32-20's. My actual calibre for both is guns 0.321 inches.

Regards,
Michael J. Green