I went shooting today with my 2 brand new Baer Mags and had a few FTF in my Concept VI. Never happened to me before. It looks to me like the round was not entering the ramp at the correct angle, kind of pointing up and binding as the slide closed. Or the pad in the mag was not pushing the round all the way to the top. (ejection was fine) My Wilson mags worked perfectly, but they are not new and are very smooth in there function up and down.
The Baer Mags are not as smooth, if you push the pad down you can feel friction and sticking. Do the have to be broken in? Or lubed?