Hey All, Back in October 2009, I purchased a new, .45ACP CZ-USA/Dan Wesson Commander Bobtail 1911. The one I bought did not shoot straight, jammed, and had problems with the slide now locking back. After sending it in three times within the three months I have "owned" the firearm, they decided that it had gremlins, and that no matter what their gunsmith did, it would not function properly, so they decided to replace it. Out of the kindness of their hearts, they say they have done some custom tuning to the replacement, so that I did not have these problems again, to use their time and money shipping it and fixing the gun. After waiting a month and a half, I received the replacement firearm, and fired 100 rounds of S&B .45 through it without a single hitch. I was completely excited that they finally fixed it right and that I had a good pistol that I could depend on. (I used S&B because that is what they use at the factory). Well, S&B isn't plentiful around my area, and I do not believe that after paying $1100 dollars for a gun that is supposed to be an excellent product, has great parts in it and equally great reviews, that it should be able to take much of the factory ammunition that goes through it besides S&B, especially since in a perfect world I would like to use it as my Carry Gun. Today, I went to the range, and put 100 rounds of WWB through it, and 50 rounds of WinClean through it. It was properly cleaned and oiled with FP-10 (What the gunsmith at CZ/dan wesson recommended to use), and used the checkmate magazines that they sold me and also recommended that I use. They seem to be great magazines. While tuning my pistol they tried to use Chip McCormick Powermags and Wilsons, but they did not lock the slide back. Anyways, the gun consistently malfunctioned with both types of ammo on round 7 of 8 in three different magazines, where the last round was stuck between loading into the chamber and leaving the mag. Sometimes the slide would be half back, sometimes just a half a centimeter out of battery. Had to rack the slide multiple times in order to get the round out. The slide also failed to lock back on the last round being fired for the few times that it didn't completely "Jam" while loading the last round. Thus resulting in me being confused that i had an extra round in there, but nope. CLICK. I have to admit, I confess myself disapointed that this firearm seems only to work with one type of ammo. How am I supposed to trust this thing to reliably shoot my Golden Sabres or Winchester Ranger Bonded hollowpoints if it cannot reliably fire ball ammo other than S&B? Am I being unreasonable to expect this to fire other kinds of ammo? I have a Springfield TRP Professional Custom 1911 .45 (yea im spoiled), and it feeds white box, S&B, fiocci, blazer brass, hollow points, and anything else that I choose to put through it, with any magazines, without a single hitch. I am considering selling this to somebody with more patience and use the money to put towards a custom nighthawk variation of the bobtail. Any thoughts? Am I being unreasonable? Thanks.