Find Dealer - Underwood Ammo You must be 18 years or older to enter this site By clicking 'Yes', you confirm that you meet the legal age requirement
10mm Auto 200gr. eXtreme Terminal Performance (XTP . . . - Underwood Ammo Underwood Ammo™ XTP rounds are notable for their power and accuracy We utilize Hornady eXtreme Terminal Performance (XTP) bullets which are designed for deep terminal penetration, great accuracy and controlled expansion We combine Hornady unparalleled XTP bullets with our own carefully formulated design which results in one lethal round Nickel-plated brass casings, our nickel plating