re: Taurus PT-111 Millenium Pro 9mm misfiring

I would get a variety of different brands of ammo and try to find one that it will fire every time, then stock up on that and stick with it. Stayaway from the Russian/Romainian/Yugo ammo as the military primers they use are typically harder than commercial US made ammo. Try Remington, Winchester, Federal etc.

If after doing this and are not successful, only recourse is to send it back to Taurus again.