Newbe here in search of help. I have an original 1881 Marlin in .40-60-260 that has a feed issue that has me baffled. I have checked the usual stuff, like overall cartridge length and proper operation of the rifle, and all that is okay, but here's the rub: the rifle cycles out a single cartridge from the magazine tube fine, but when I load 2 or more cartridges in the magazine tube and cycle the action, the extracted shell rim interferes with, and jams, with the next loaded cartridge rim in the elevator, preventing both the extraction of the fired cartridge and the loading of the new unfired cartridge. It APPEARS to be a timing issue with the extractor?, but the fact that using a single cartridge works, and using 2 or more doesn't has me (and my local gunsmith) baffled. Any thoughts? Thanks in advance for your help.