Underwood Ammo XTP rounds are engineered for unparalleled power and precision. Safe for use in large-frame Ruger revolvers, TC Contender, Colt Anaconda and Freedom Arms firearms, as well as modern Model 1892 lever guns and Winchester & Marlin 1894s, these rounds are not standard pressure cartridges. Do not use them in firearms that are replicas of early designs, such as rolling blocks, Sharps or Colt-style single action army revolvers. Our XTP rounds feature Hornady eXtreme Terminal Performance (XTP) bullets, renowned for deep terminal penetration, exceptional accuracy and controlled expansion. Combined with Underwood Ammo's expertly formulated design, these bullets create a highly effective round. Each cartridge is housed in nickel-plated brass casings, offering several advantages: improved feeding in all firearm actions, enhanced corrosion resistance compared to traditional brass and easier cleanup during reloading. Nickel-plated casings resist tarnishing and maintain their integrity against moisture, leather and other environmental factors. Additionally, Underwood Ammo utilizes flash-suppressed powder to ensure clear vision in low-light conditions. Our ammunition undergoes rigorous field testing with real firearms, ensuring performance and reliability in various real-world scenarios. This high-performance ammunition is new production, non-corrosive, boxer-primed and reloadable. For superior performance and dependability, trust Underwood Ammo.