Vincent - they said ONLY Federal ... or they recommend Federal? Any commercial, name brand ammo should be fine for this pistol. Unless your manual specifically states they only guarantee the gun if Federal ammo is used, then .. use whatever name brand ammo you want that is produced for the pistol.

Vincent - here is the AMMO section from the owner's manual: "Always keep the muzzle pointed in a safe direction and finger off the trigger.2223Always keep the muzzle pointed in a safe direction and finger o the trigger.Use only clean, dry factory-loaded ammunition. Old, damaged, wet or oily ammunition may fire at pressures higher than industry standard, causing injury to you and bystanders or damage to your pistol.Do not use reloaded ammunition in your pistol. Its firing pressures are unknown and may well exceed industry standard, causing injury to you and bystanders or damage to your pistol.Odd sounds are signs of trouble. If a round “does not sound right” when it goes off, stop firing right away.A bullet may be stuck in the barrel. Firing the pistol in this condition may cause pressures higher than industry standard, causing injury to you and bystanders or damage to your pistol.If you hear any odd sounds when firing your pistol, stop firing, clear the pistol and “field strip” (or disassemble) the pistol in accordance with the procedures listed in this manual. Once the barrel is removed from the slide, look down the bore. If you do not see light, there is something stuck in the bore. Do not fire the pistol again, and take the pistol to a competent gunsmith or contact the Taurus® Service department at 800-327-3776. “+P” ammunition can be dangerous. There is a detailed discussion about “+P” and “+P+” ammunition on page 24. "