Well I had a magazine issue at the range. I feel pretty stupid because I had been using that mag as a carry mag in my g29...it is a 15 round mag that I had put a sleeve on and stuck in my truck and never test fired it....its a Glock, right? I had it loaded with some Underwood ammo, hollowpoints 165 gr and it started jamming. The spent shells would eject but the next bullet would stovepipe and not go into the chamber. I racked the slide and still the bullet would jam. I'm starting to get agitated when I remembered that I had my normal 10 round mag in the truck in the parking lot, with my carry ammo Gold Dots Underwood. So, in a nervous sweat, thinking that my gun is messed up, I go get my regular mag and come back and give it a whirl. I put the same ammo in that mag, trying to eliminate one issue at a time. Worked like a charm....no jams, worked just fine. Well now I'm starting to feel a little better....and I load up my Gold Dots. Smooth as butter!!!!Everything worked like it was supposed to. Then I look at the mags side by side...there appear to be some small differences, not enough that you could see in a photo comparison but obviously there is something amiss. I guess my lesson that I learned for the day is don't place blind trust in anything related to a gun....Glock or not. We've all heard it said a million times...its a Glock, it works....I guess I drank the koolaid, and it could have cost me....thank God I figured it out at the range Wanna kill these ads? We can help!