Gentlemen and Ladies, Today was the first time I took my XDM .9mm out on the range. It was a particularly momentous event in that this was my first firearm purchase, as well as my first couple only "shooting date" with my wife, who is new to firearms. The thing rocks--I still need to practice mind you--but both my wife and I were landing decent groupings off of little to no recent practice. I grew up shooting, but this is my first weapon and thus the first time I've had to take care of one independent of someone else. A few concerns: We were using cheap range ammo - Blazer Brass and Federal Champion. There weren't may people at the range today and the range-master pointed out that the casings ejected from my gun were pretty blackened on the outside. I'm glad he pointed this out. He said that this might be the result of a barrel sealing issue or re-load ammo, but this ammo wasn't reload. Should I be concerned, or is my gun just new? I ran a few rounds of higher quality Hydra-Shok through, and those casings were either not blackened on the outside or only slightly so. I noticed when the action is open on my weapon, the barrel can shift slightly on both vertical and forward/backward axes. Is this normal? My dad's Beretta, the only other gun I've had any real exposure with as far as field stripping, etc, didn't do this. I know this sounds dumb, but better safe than sorry. Any tips for cleaning? I ran through a standard regimen tonight with cleaner and re-oil, but perhaps the XD has certain hot spots that need more affection? The rear sights on my weapon came with a slight cosmetic defect--the dots are a bit blurred. The Springfield folks said that I could send the whole slide in to have the issue fixed, but I'm wondering if this is even worth my time. While shooting, the defect is negligible as I was taught to focus on the front sight anyways. Thank you for your help to a new guy!