I have been cussing at the stripper clips for my Mosin for as long as I have owned it. Now that there are three more of them, I started casting about for a solution, or at least better clips.
Turns out I was merely loading the damn things wrong.
|This is wrong.|
|This is how they should look!|
What was happening is the rims were locking when they were being pushed past the interruptor and that keeps them from going into the magazine. If you set the rims so they're already properly aligned as if they were in the magazine they zip right in like they're supposed to! In retrospect, it's obvious. What threw me is that SMLE clips load with a symmetrical pattern with rounds 2 and 4 slightly behind the other three and the shape of the charger guide and follower stage them in correctly. So far that was my only experience with rimmed rounds and box magazines.
From a comment by The Redactor: