Last year the Marlin had some issue feeding regular 44 magnum (it feeds leverevolution just fine) and since I intend to do some handloads this season I wanted to make sure I had the problem resolved.

Turns out the cartridge stop on the cartriodge lifter was about .080 too short. I drilled and pinned it, and stoned the pin off to length so that only one cart came out of the magazine at a time. Works fine now, so I can juice up some nice loads- though the 44 mag is useless past 100 yards anyway.