Resolved - Mauser Trench Magazine Feed Issues

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Purchased a Mauser trench magazine on a whim, figured it would be an interesting novelty to slap on a Russian capture K98. Needs a little bit of adjusting to get a good positive fit on the rifle, but once that's done it isn't going anywhere.

But, the bloody thing is a nightmare when it comes to feeding rounds. Had the rifle in a safe location to load rounds into the magazine, and only loaded a total of twenty rounds (only dug out one box of 8x57) to test out the feeding - results were poor. The first two rounds feed normally, after that the follower seems to regularly jam in the magazine housing at odd angles leaving the rounds too low to feed (bolt rides over the round). Tried the "Enfield" method of clearing magazine issues, push the rounds down and snap up - sometimes it clears the issue for a round, good rap on the side and bottom of the magazine - occasionally it squares things up, but not all that often... Now, when you eventually get rounds three through fifteen out of the magazine with a copious amount of swearing and "adjusting" the final five rounds feed just as Paul von Mauser intended.

So, being that results were poor with twenty rounds, I tried fifteen instead and results were better but feeding was still hit and miss. Ten rounds would work more regularly but still some issues here and there. OEM spec. five round load outs work as intended.

Now, the question is, is this just a piss poor design in general or is the reproduction a bit sloppy? Or, does this explain why the Kaiser's boys only dabbled with the trench mag in limited trials up until about 1916 before abandoning the abortion.

Is there any sort of way to make these things feed more Mauser like?

Resolved - see post #5.
 
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Are the inside mag walls a little gooey with oil?

Doesn't seem to be, just enough to notice a trace on your fingers after handling it for a while.

The inner surfaces of the magazine are smooth - but, there is a small lip on the back of the magazine maybe a half inch or so down. It doesn't look like much, but today I noticed that when the feed issues pop up, that sometimes cartridge bases will hang up on the lip. I've seen it now a few times where you'll get say three or four rounds fed normally, then the next round is too low to catch the bolt, so I'll try and push the rounds down and snap them back up and sometimes this sees the rounds catching on the lip and then the lower rounds and the follower will be jammed in the housing at an odd angle. Lots of fun carefully removing rounds, just waiting for the works to snap up and bite the thumb and index finger...

I'll take a file to it tomorrow and see if that improves things. I did take a small amount of material off the rear catch, to make installation a little easier - still has plenty of positive locking ability, just a little less effort to get it securely seated.

I did a bit of searching online again today; not a lot to go on about these magazines. No one seems to know who makes them, and there seem to be only a handful of comments about issues. One guy figures the problem can be solved by placing a dowel in the bottom of the magazine. Another claims the spring is too weak - tell that to my thumb.
 
Well, it was indeed the rather small metal lip on the back of the mag causing the feeding issues. After a suitable amount of grinding and then filing to clean it up a bit the magazine now feeds without issue - up to and including the full 25 round capacity. Little stiff getting that last round seated in the magazine, and takes a bit of a whack to get it moving, but all in all a successful "modification".

Being bare metal on the lip, I guess I may have to try my hand at bluing to make it look more presentable - will see how that Outer's solution I picked up a year or so back works...
 
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