Thanks Bobster.
I'm constantly tapping the mags to load them up, I'm using 25rd mags, but they get tight around 10+, I had found a fix to open up the mouth with a dremel inside the plastic lower section of the mag, I didn't notice a drastic difference in mine, so I just go with the tapping...
I know this thread is pretty old but I wanted to share my recent stovepipe problem and solution with my 715t. I bought it in '13 and it worked fine never seemed to have a problem with any type of ammo in the first couple years, but I stopped using it until last year when my daughter started...