UNDERWOOD 444 MARLIN 220GR XTREME PENETRATOR 20RDUnderwood's . 444 Marlin 220gr Xtreme Penetrator rounds are engineered for maximum penetration in hunting situations. These cartridges feature a solid copper bullet with a unique fluted design that creates a wound channel without relying on expansion. The . 444 Marlin cartridge provides impressive ballistics, making it suitable for hunting medium to large game. Features Specs: Caliber: . 444 Marlin Bullet Weight: 220 grains Bullet Type: Solid Copper