I have DW Guardian and it runs smooth as can be with all factory ammo. They tell you to shoot only ball ammo for the first 500 round and clean it after every 50 rounds and then you can shoot hp. Its what I did and it feeds everything I put in a mag. I also have a few Wilson mags. Hope this helps.
Butch, I am a natural left handed shooter and a little over a yr. ago I had a rso ask if I could shoot right handed. I tried and did very well and now I can carry on either side. The trick was when shooting right hand to turn NOT TILT my head to the right and a line my left eye with the sights...