Didn't notice any difference using the different magazines.
Then again, I don't exert much force using my little finger due to holding it differently across a range of different size revolvers and pistols.
Sometimes is has purchase against a grip frame ... sometimes just against the bottom edge, slightly curled down and almost underneath ... and sometimes it's curled completely underneath the grip/mag butt. I just let it find somewhere to go, keep it from interfering with the rest of my grip, and use my ring & middle fingers for my master grip.
I try to prevent any adverse influence that might be needlessly created by my strong hand's little finger ... (albeit unintended, or unrecognized, at the time) ... even when it has enough room to align itself under my ring finger against the front of the grip. BTDT.