I bought a DB9 about a month ago and I've had nothing but problems with it. It won't feed anything reliably. About once or twice per mag it will jam, either ramming the bullet nose against the top of the chamber or pointing it straight up in the air like a stovepipe jam only with the next unfired round. I tried three different brands of FMJ ammo and three brands of HP. I called Diamondback and they said to try Hornady Critical Defense ammo. I tried it today and it's the same or worse than everything else I've tried. I need to send the gun back to them but I'm reluctant to do that because it'll cost about $60 to ship it. Anybody have any experience with these and possible solutions? I'm about at my wits end with this gun. BTW It's for sale.