jimbobborg
Oddball caliber fan
Springs in magazines are not broken in. Run a few mags worth through and it should fix the problem.
basically this. never seen one run right in my Mini-14. factory magazines have all been flawless.I bought some Promag mags for my mini-14 when I first got it. They were cheap. They turned my Mini into a jam-o-matic and the feed lips broke.