Well, after a 7 month wait, I finally have a 9mm PPC enroute. It should be here Monday. I'm going to set it up for Glock magazines from the get go. I've been holding 2 Magpul 21 round magazines since early this year for this event. I got them out and loaded them this afternoon and boy do they have stout springs. Hopefully they will become easier to load after a break in period. I am not a stranger to loading magazines either. One afternoon when I was assigned to the firearms training unit with the LSP, I loaded 72 G17 mags and 36 MP-5 magazines for a demonstration shoot the next day. Does anybody have any experience with the 21 round Magpul mags? Bob!!