Good Afternoon. NoGo at the range today. Looks like the cartridge was a bit too slim for the chamber and slid forward when the needle went forward effectively moving the percussion cap. I redid the cartridge at 20mm up from the original 18mm. The cartridge now fits the Carcano chamber as snuggly as my Dreyse cartridge fits its chamber and my Dreyse fires flawlessly. Will send a target picture tomorrow. Randy