The Firing Line Forums - View Single Post - 308 Norma Magnum to 300 Winchester Magnum

Bart B. · March 4, 2013, 05:27 PM

It was my rifle, I'd just buy .300 Win. Mag. cases, full length size them in a .308 Norma Mag die, trim them to length then load them with data for either the .30-.338 Win. Mag or .308 Norma Mag and shoot them. The Norma case was favored for long range matches of the Win. Mag anyway; better accuracy with new cases and the barrel lasted a bit longer. It was one of the favorites in long range benchrest when that discipline started.

Otherwise, the Norma chamber may not completely clean up with a .300 Win Mag reamer at the Norma shoulder point as well as the throat.

March 4, 2013, 05:27 PM	#4
Bart B. Senior Member Join Date: February 15, 2009 Posts: 8,927	It was my rifle, I'd just buy .300 Win. Mag. cases, full length size them in a .308 Norma Mag die, trim them to length then load them with data for either the .30-.338 Win. Mag or .308 Norma Mag and shoot them. The Norma case was favored for long range matches of the Win. Mag anyway; better accuracy with new cases and the barrel lasted a bit longer. It was one of the favorites in long range benchrest when that discipline started. Otherwise, the Norma chamber may not completely clean up with a .300 Win Mag reamer at the Norma shoulder point as well as the throat. Last edited by Bart B.; March 4, 2013 at 05:39 PM.