I'm way late to this party, but use of Fiocci hardball and Mec-Gar mags in mine have resulted in much reliable shooting.
Advice against C1 carry is good, as there ain't too much keeping that little striker from springing forward, even with the safety on. A good little "bump" and that would be all she wrote.
I think I picked up a couple of Mec-Gars from CDNN.
Helpful tip: Just my opinion, but even though I own the .25, I think a Beretta .22 or maybe one of the NAA mini's in .22 or .22 mag would be a better option for a SD BUG. My Baby lives in the safe, as it's heavier than the P32.