The .338 Federal was designed by Federal Ammunition and it is a SAAMI standardized cartridge that was released in 2006. In the table below is a comparison between the .338 Federal and the older .358 Winchester, another cartridge based on the .308 Winchester.
Sheriff Jim Wilson of Shooting Times magazine reviewed the .338 Federal in a Sako rifle and tells of his experience hunting whitetail deer with them "In The Field With The New .338 Federal".
Buck Pope of GunWeek reviewed using the .338 Federal in a Sako Hunter Model 85 and his use of them to harvest a 225-pound wild boar and an 8-point whitetail deer "The New .338 Federal Is Big News for Big Game"