Hi Smitter1, that is very uncommon with new Luger Meg-Gar mags, but nothing is really ordinary when it comes to Luger mags in general.
First, do both mags perform the same, stick at the same place? Wait, back up a second, do these new Mec-Gar mags have the plastic follower? If not, then they aren't new production, they would be NOS (new old stock!) So assuming they have the plastic follower, a good thing, do they, the followers, stop at the same spot without any rounds in them? If it does, you need to insert wood or plastic, maybe even aluminum up into the mag and spread the sides out throughout the full length of the mag,. All the while measuring the gain, if any, in thousands with a digital caliper. The mags are heat treated, I'm thinking 4130 or 40, and the yield strength is quite high, so it may surprise you as to how far you can distort them without change. At gain of .005" will make all the difference in the world. Keep us posted, also try some different ammo just at the bench, you don't need the gun to do dynamic mag function tests, just snap the rounds out with a wooden dowel... I've done it that way for literally thousands of rounds...
.... best to you, til....lat'r....GT
