It's no secret that a lot of us are frustrated to use stripper clips in the Mosin-Nagant. The causes vary, but can usually be narrowed down to any combination of four items.
1. Improper stripper clip loading. Though in theory the rounds can be thrown into a stripper clip willy-nilly and be expected to work correctly, the reality is that on must stagger the rims in an order that gives omni-directional loading potential as well as ease of loading.
I have seen surplus factory loaded into the stripper clips in this manner, and it works well:Click to view on YouTube
This method ensures a consistent pressure from case-to-case. The middle case can also be staggered UNDERNEATH the rims instead of on top.
2. The use of cheap stripper clips. The ones from China in this next vid are the most popular, but they're also flimsy due to low carbon content. Hardening them helps a lot.
This is the method I use:Click to view on YouTube
This helps keep the rounds in place while they move downward. Otherwise, as you can see, they tend to spill out the sides.
3. Poor fitting of parts. The USSR could not always hand-fit parts properly. The Mosin was made during a time when final fitting was done by hand. One cannot really expect these to function well without such fitting any more than one could expect a 1911 to function will by just dropping in random parts from different pistols!
Unfortunately, this next video only shows the results of proper fitting, not the fitting itself. I've not gotten around to doing the picture series on that, yet. Results:Click to view on YouTube
I hope someone out there finds this writeup useful. Though I've posted these vids one place or another, this is the first time I've brought them together.
The Mosin was designed to work a certain way, and when arming a conscript army en masse, I would expect that it's rather difficult to take the time on each weapon that should be taken.
However, individually-owned weapons can, and should, be made to function as originally intended by the designers. They are much more useful this way and much more of a pleasure to shoot!