Have a couple of these, seem to be the new design with curved lips vs the more right angle of the old style.
Seems either the spring is strong enough or the rounds are riding high enough to cause problems with third lug, which was polished long ago, so the old gouging problem is back.
It is bad enough to prevent loading at 15 and 14 rds. Not to mention what is happening to some expensive brass.
Not sure doing any more work on the lug is advisable so what I am thinking is to reduce the tension as the mags work fine at 13 rds.
So how much spring would you remove or am I off on the wrong tangent?