I bought a used Rossi 92 years ago and have never got it to run right until today. I checked the cartridge stop and discovered the cartridge stop didn't engage 100% of the time. It was like an intermittent electrical short. Sometimes it worked, but not all the time. Anyway, I filed the angle on the part to allow further travel and that seemed to do it. I ran 30 dummies through it without issue.
I shortened the ammo box on our gun cart two inches to see if it would balance better stuffed with ammo. It got tippy yesterday when it was fully loaded. We'll find out next weekend.