Personally I wouldn't want to see it tried. After a certain point you cause more problems then you solve in a high-capacity single stack 9mm mag due to the cartridge taper. Nose dive potential increases in direct proportion to round count.
Take a look at the article below and you'll see why. Ever notice that the 9 round mag is more difficult to unload than the 7? Here's why:
This is an older thread, you may not receive a response, and could
be reviving an old thread. Please consider creating a new thread.
Springfield XD Forum
A forum community dedicated to Springfield Armory XD and XD-M series firearm owners and enthusiasts. Come join the discussion about optics, gunsmithing, styles, reviews, accessories, classifieds, and more!