This has me befuddled. I haven't had my XD9 Service Model for very long and out of convenience have only loaded it by: inserting magazine while slide is locked open and thumbing the slide release lever to chamber first round. Yesterday at the range I decided to mix it up a bit and tried to load a full magazine with the slide closed and then rack it to load the first round. Well, I never got that far as the magazine wouldn't even seat in the gun if the slide was closed. I tried with my original 10 round magazines, 15 round magazines, WWB ammo, and Ranger T ammo (if any of that makes a difference, but I can't imagine how it would.) Mabye I was just being too gentle, but it sure felt like I was giving her enough to insert the magazine. Has anyone else experienced this?