I'm in Calgary too, and bought my HC3R at TSE. I was at the range the other day with my buddy and we both had our SR22's with us. He was intrigued by my magazine after I showed it to him, and asked to try it. I've been running Federal blue box bulk in it with no problems at all when loaded correctly. We tried loading his CCI Blazer (the crap in the white plastic trays which isn't actually made by CCI) and it wouldn't load properly at all. After it did, he still experienced many of the same issues you've experienced. Then I put my Federal bulk stuff in and it worked perfectly.
So, while this may not exactly be a very scientific test, I've concluded that I think these mags are picky with ammo that is put in them. I was going to buy more of them, but I already have 3 Ruger OEM 10-round mags and one HC3R and I think that's probably enough for my needs. Otherwise I'd buy your HC3R's off you.