Federal 308 Win 205Gr Hp Subsonic Rifle Ammo 20Rd 10Bx/Cs A. This Federal Ammunition features Jacketed Hollow Point (JHP) bullets that deliver powerful stopping power immaculate accuracy and consistency. With special offers on Ammunition and other top-tier rifle ammo from trusted brands like Federal you re sure to find the ideal cartridge for your field or range use. Stock up today to save big on ammo and other top-tier tactical hunting and outdoor gear at OpticsPlanet. Specifications for Federal 308 Win 205gr Hp Subsonic 20rd 10bx/cs: Manufacturer: Federal Caliber: 7.62x51mm NATO Bullet Type: Jacketed Hollow Point (JHP) Bullet Weight: 205 grain Dimensions: 1.40 X 3.50 X 6.20 mm Length: 6.2 in Package Contents: Federal 308 Win 205gr Hp Subsonic 20rd 10bx/cs