Sticky lever
I have a 45-70 marlin that will eject good. But loading in that next round seems to be tough. You have to work it fast, and you won't have any problems. Try to do it gently, and I have to work the lever back and forth once to get the round in. I generally shoot 300gr partitions, so I know it not the metplate size.
Anyone else notice this? I can't say my 336 does this or noticably.