Alot of the new hicaps, all mfgs, have issues. For example, I took some new Ramlines, Eagles and BC to a buddies with a Norell 10/22 and tested them with several kinds of ammo. What it boiled down to is that different combos of mags and ammo act different in certain guns. Mags that ran 100% in my gun would not cycle right in his. Mags that ran perfect in both guns would only do so with different ammo.
On the eagle mags, I found you need to clean up the plastic slag from the molds. Very messy.
On the BC mags you have to watch the springs and shoot a little oil down them. If the follower drags it will not work correctly(have tossed a couple mags in fits if rage before figuring that out).
The ramilines are just hit and miss. I have a few that run great and have thrown others out 10 yards and blasted them.
These mags are cheap enough now that you should be buying a few of each and finding the combo that works for YOUR GUN.
CH