M1 Carbine Power

[EdL]

First, all of my magazines are 15 rounders.

While the feeding issue happens more dramatically with the Koren Mags, I have also had issues with US GI surplus mags--just not as dramatically as with the two Korean Mags. The same Korean mags have no issues with FMJ. The GI mags comprise a mix of used and NIW 15 round magazines.

I have a spreadsheet of failures that I have maintained that list the firearm, the ammo, and the magazine with which it occurred. Of the 7 or so magazines that I have, only two used GI ones have ever exhibitted a feeding issue with FMJ ammo. I probably have between 1200-1700 rounds total fired between the two carbines.