You have to work up the load for your rifle.
Go here. http://www.barnesbullets.com/images/308WinWeb.pdf
The muzzle flash and blast out of an 18.5" barrel will be astounding with any .308 load.
Help my somewhat limited computer skills, but is is possible to access that info for other calibers and/or bullet weights, and if so, how
??
Johnn, just click on this link and pick your cartridge from the list...
http://www.barnesbullets.com/Copper_Manual4/