Yeah I have two of those setups myself and they work flawlessly.The mags are probably junk. I just did a quick search for Eagle Industries mags and they appear to have a lot of problems. I would just recommend sticking with the 10 round rotary's and getting some alangator trimag couplers. I absolutely love mine.
After looking at the mags, I can see where the bolt catches on the magazine. It hits it on the top left part on the rear of the mag when the bolt goes to chamber a new round. Since the mag is useless in its current state I will try to file/sand that part down a bit to see if that helps.Well if it does work,you might as well try to make it work.
Smooth all edges of the lips,maybe try opening the lips up a little at a time.
This is ironic because they are made in NY.From my personal experience and from others, I can say with confidence that the vast majority of preban 30-rounders for the 10/22 are utter trash. My 10/22 being strictly a range gun, I just stick with the factory 10-rounders. Ruger recently came out with factory 25-rounders, but of course we can't get those here in NY...
10_22-BX-25-Magazine-Sturm, Ruger & Co., Inc.
I have the same problem with the one I bought from Steve-o. Now I have a $50 paper weight. I use any of my 10 rnd magazines and I have no issues what so ever in my ruger 10/22. I put in the preban and it jams every other round. I will probably never buy any preban 10/22 mag again.
I have not seen many of the preban mags work well for anyone I know. A bit off topic but, I use these tri-mag connectors too, love them! Although they do not fit into my speed loader while connected. Have you found a speed loader that works while they are connected??? I have to pull them apart every time I reload and put them back together. Not a huge deal but annoying none the less.The mags are probably junk. I just did a quick search for Eagle Industries mags and they appear to have a lot of problems. I would just recommend sticking with the 10 round rotary's and getting some alangator trimag couplers. I absolutely love mine.