The Taurus PT-92 began as a license built Beretta 92 under contract for the Brazilian Military. It, like the Beretta 92 was designed around NATO ammo. The NATO standard is essentially, under SAMMI standards, a plus P loading of the 9mm using a 124 grain FMJ bullet. If your PT-92 is like mine, it will shoot tighter groups with NATO standard ammo. Winchester has a line of 124 grain FMJ 9mm ammo that has a broad gray banner across the box that says "NATO" and under that is "Made in USA". Several other manufacturers will have ammo that is also marked NATO. The headstamp marking for NATO ammo is a circle around a cross.