Witness Elite Match 10mm mag problem

[hondoweatherbee]

Thanks to you folks I have found the problem.  The K10 mag is a few thousands of an inch longer than my good orange follower T mags.  After sanding down the K10 front and back, and then marking those areas with a black felt tip pen, I inserted the K10 all the way in and withdrew it by hand (takes a little effort).  I now see where the binding is located and will work on reducing it hopefully to the point of elimination.  Ideally I would like the K10 mag to work as smoothly as the T mags but I will take what I can get.   HW