Federal PowerShok, 45-70 Government, 300 Grain, Sierra, 20 Round Box 4570AS
Specifications:

Caliber	45-70 Government
Bullet Type	Jacketed Soft Point (JSP)
Bullet Weight	300 GR
Muzzle Energy	2280 ft lbs
Muzzle Velocity	1850 fps
Rounds Per Box	20
Boxes Per Case	10
Application	Medium Game
Casing Material	Brass