^ The problem with the XDm's magazines, though, is that their structure tends to be weaker than their class-competitors'. This is a lamentations routinely heard/read.
That said, I've had excellent luck with mine - no, I'm not about to debate their objective weaknesses with my anecdotal evidence and experience, I'm just putting forward my perspective, that's all.
I have three magazines that I use exclusively for dry-fire training: two 19-rounders, plus one 13-rounder for my 3.8 Compact. I honestly have no idea how these feed anymore, as I don't load them with live rounds - but at least in terms of dry-fire cycling of snap-caps/dummies, their feed-lips seem to be OK, and their springs still strong enough to lock back the slide when I draw back on empty.
Live-fire, I have five 19-round mags that I currently use with my 3.8 Compact, along with one 13-round magazine. Similarly, there's also another set of six older 19-rounders, which, by January of 2018, were over 7 years old and had seen - as a conservative estimate - over 80,000 rounds cycled through their collective ranks:
^ I'd taken that picture to address a member's concerns at XDTalk in December of 2017. At that time, I'd only had the magazines in the bottom row - the five 19-rounders that I use when I train with my 3.8 Compact - for about two years. The difference in the condition of their followers and feed-lip consistency is readily noticeable compared against their 7+ year-old counterparts in the middle row.
To this day, those originial six magazines are still going strong - the last time they were put to "real" use was at a 3-hour "advanced applications" seminar that targeted "throttling" of the BSA template, held by a local instructor. In those three hours, I went through close to 600 rounds - that means that each of those six magazines saw about 100 rounds each, or five complete load-unload cycles. They have replacement magazine springs (Wolff) in them, but that's it (
https://www.m4carbine.net/showthread.php?179626-Springfield-xdm-9mm-mags&p=2259030#post2259030 - this thread came at the time when I had then-recently experienced some mag-related issues, and I replaced the springs in those original 6 magazines at that time (
https://www.m4carbine.net/showthread.php?179626-Springfield-xdm-9mm-mags&p=2259030#post2259030) .