Precisionbrass.net has 7.62×51 NATO / .308 Winchester brass in Stock!
The differences between the two casings are very small, but they are not exactly the same casing.
The 7.62x51mm cartridge was designed to be a NATO standard battle cartridge, with a slightly thicker brass casing and less chamber pressure; around 50,000 psi.
In contrast, the commercial .308 Winchester has a slightly lesser brass thickness specifications, and the SAAMI established maximum chamber pressure is approximately 60,000 psi. It is generally safe to use .308 and 7.62×51 mm cartridges interchangeably. If using .308 ammo in a rifle chambered for the 7.62×51 NATO round, the shooter should pay close attention to the overall condition of the rifle, as the .308 commercial round is loaded to higher maximum pressures.
The 7.62×51 cartridge was developed as the NATO standard small-arms and is a preferred casing to reloader’s nation wide.
Precisionbrass.net has most all of your standard casing sizes!
Get your brass here! www.precisionbrass.net