Mamba mag *non* issue

[9487329]

I got my 223 mamba mags in and love the build quality. I filed them down slowly, testing function until they worked great. My first day on the range with them I started having an issue where the back of the follower gets caught a bit and doesn't lift the back end of the round high enough for the bolt to push them forward to feed. I have had to disassemble to fix it each time. Any ideas on a fix? I'll get photos of the issue tomorrow.

EDITED UPDATE:
Problem solved, no issue with the mag, the dummy rounds I was using have holes cut in them that caused the malfunctions.

 

[9487329]

Ironically, my 4rd and 6rd Tikka mags have all fed flawlessly for me.

 

[Q_Sertorius]

I got my 223 mamba mags in and love the build quality. I filed them down slowly, testing function until they worked great. My first day on the range with them I started having an issue where the back of the follower gets caught a bit and doesn't lift the back end of the round high enough for the bolt to push them forward to feed. I have had to disassemble to fix it each time. Any ideas on a fix? I'll get photos of the issue tomorrow.

Well… I have never had that issue with a Mamba magazine.

Mine have always fed flawlessly, but were very hard to fit in the rifle. I thought I needed to file them down to make them fit and started to do that, but fortunately someone on here told me to put a shim between my bottom metal and the stock. A pair of ten cent washers solved the seating problem. They are now easy to put in the rifle and still feed flawlessly.

 

[9487329]

Update:
Going back and forth between the two mags with dummy rounds and I can't recreate the issue lol

 

[9487329]

Finally was able to recreate it. Clearly the spring is caught somehow inside.

Video 1
Video 2

 

[9487329]

@Formidilosus any ideas?

 

[9487329]

Ah so it looks like I can get it to fail on rounds 7-10 if I push the 10th round down when loading, like if I'm going to load another round or check to see if there's room for another. Pushing it down too far seems to get the spring stuck. Hitting it really hard releases it

 

[9487329]

Spring slides loose
The loose one is the one that has issues

 

[Formidilosus]

@Formidilosus any ideas?

I haven’t seen any issues with the 40+ we have in a lot of use, but I would stretch the spring and put a drop of glue on it to hold it in place.

 

[9487329]

I haven’t seen any issues with the 40+ we have in a lot of use, but I would stretch the spring and put a drop of glue on it to hold it in place.

Turns out the issue is the little holes cut in the dummy rounds. I haven't had any issues with live rounds and no issues with normal dummy rounds I bought to test the theory. The only issues I've had now are with those dummy rounds and during ball and dummy drills. I think the holes are catching on the groves on the inside of the mag. Mamba mags remain perfectly reliable

 

[Formidilosus]

Turns out the issue is the little holes cut in the dummy rounds. I haven't had any issues with live rounds and no issues with normal dummy rounds I bought to test the theory. The only issues I've had now are with those dummy rounds and during ball and dummy drills. I think the holes are catching on the groves on the inside of the mag. Mamba mags remain perfectly reliable

Thanks for the update. The Mambas have been by far the most reliable 223 Tikka mags I have seen.