I've had a few rim-locks with my magazines but it was mostly my fault.
I don't like the fact that I have to be so careful to load them to avoid rim-lock as it's long and tedious with the 15-rounders.
If the new ones can be loaded quickly and don't have a rim-lock problem as they shouldn't, I will get the new ones asap and probably never use my old ones again.
I feel stupid for buying 4 of the old 15-rounders; I should have had more faith Vudoo would offer a fix but I didn't because I figured they could not get around the RimX patent.
I can't help but wonder if Vudoo decided to pay the patent fees and, if they did, it was a wise decision as I will gladly pay the extra money needed to get the better magazines.