I now have 6 of the Butler Creek Steel Lips. Every one of them jammed occasionally until i had put 100-150 rounds through them. If you're willing to struggle through that break-in period, you'll be rewarded with a 25 round magazine that is just as reliable as the 10 round Ruger. At least that has been my experience x6. Good Luck!
While I am extremely new to the hobby, I too am beginning to think this is the case with magazines . . . at least with the 10/22, even including the original 10 round rotary. The first few fully loaded mags of HC3R and the 10 rounder both had many fail to feed problems, often with the first round out of a full mag. But after running a few hundred rounds through them, they have become very reliable, and I get more duds (chambers properly, but doesn't fire when struck by the pin), and loosely set bullets in the casing that I don't feel comfortable firing than I do fail to feed due to the mag issues.
Just a guess but it could be a combo of both wearing edges of pieces, as well as wax deposition from the ammo.