Tested out the wifes birthday present today a ADUH prefix Glock 44 for safety and reliability. Ammo used was first Federal Auto match 325 round bulk pack 40 grain then a 100 round box of cci mini mag 40 grain. Gun itself was very accurate and shot to point of aim right out of the box. I did pull a bore snake through with a touch of clp about every 100 round or so. Gun was fully broken down and cleaned and lubed before the range session. I first fired all of the 325 round federal bulk. All mags dropped from slide stop. I had one failure to fire. Good primer strike bad round. It did fire on a second hit on another place on the rim. I had one failure to eject. I had 6 magazine related failures. All failures were caused by low pointing rounds in magazine. I had 4 that went high and damaged bullet by going half into top area of chamber and outside of chamber. I had one that actually went flying after slide stop release and actually went 10 yards down range. I probably could of hit target if I pointed it higher. One failure to strip round from magazine the slide overrode it. It appears low pointing rounds will hit guide in mag and go high in gun. I found that if I loaded 9 rounds and pulled down load assist and sling shot the mag follower it would fix bullet angle problems. If I load 10 it is difficult to fix bullet angle problems as you don't have much room to sling shot follower. So you have to take extra time. CCi minimags were very accurate and had no problems as I watched the mags during loading. So my take on it is glock has to fix the magazines. They should of not shipped mags that require extra care in loading. Most owners are plain not carefull and will have lots of problems with these. Please Glock get the mags fixed.