uh...i've read that the ONLY thing that doesn't cycle the action on the XD is the glazer safety slug things... they have a smaller powder charge I guess.
Not sure about the power ball ammo. I know it's pricey, but I'd run at least a magazine of it through your pistol in rapid fire before I'd trust it.
All guns are different, all ammo is differnent... make sure your combination works.