Drop and no-drop mag test
This is my first post and I am not a gunsmith or anything, but the question was asked of trying mags from a dropped mag gun in a non dropped mag gun. I am fortunate enough to have 450 rnds though my gun before yesterday with no malfunction. At the range today was a guy that had a dropper, so we swapped mags. My mags in his gun would drop about every 2 mags where his were dropping every other shot in his gun. His mags in my gun would drop about every 4 rnds with the 7 rnd mag, and the 6 rnd did not drop at all after 36 rnds. Based on the scientific method of pressure felt in my left fore-finger and thumb, my mags in my gun barely move where the dropper magazines had noticeably more movement. My mag release took more effort to push and seemed to move a little farther than the dropper gun (both with no mags in the well). When installing one of my mags in my gun, there was a noticeable audible click of the mag catch, but the same mag in the dropper gun produced a "listen real close and you might have heard it" click. None of the mags had the bump that is being described in this post. I read the majority of this thread yesterday, so I took a hammer and a punch with me just in case, and ended up putting it to use on the other guy's dropper gun. 50 more rnds through his gun and mags (both 6 and 7 rnd) with no drops.
I didn't think to look at his serial prefix, but mine is a DTX4 gun. Knock on wood, but I have over 700 rnds of various ammo (165 and 180 grain Speer, Remington Golden Saber, Winchester PDX, some mixed in the box left-overs) after today and have been carrying it for 2 months with no issues. I do not count the rounds from the dropper gun mags, but I got 50 more with them.