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

mapsjanhere · March 4, 2013, 01:25 PM

A friend of mine has a very nice FN Mauser in 308 Norma Magnum. With the limited availability of the 308 NM it would be nice to rechamber into 300 WM. From my research both cartridges have identical dimensions but for the NM shoulder being 0.11" shorter. What is basically a short chambered 300 WM. Can anybody see a problem in that conversion?

March 4, 2013, 01:25 PM	#1
mapsjanhere Senior Member Join Date: August 6, 2009 Location: Albuquerque Posts: 2,832	308 Norma Magnum to 300 Winchester Magnum A friend of mine has a very nice FN Mauser in 308 Norma Magnum. With the limited availability of the 308 NM it would be nice to rechamber into 300 WM. From my research both cartridges have identical dimensions but for the NM shoulder being 0.11" shorter. What is basically a short chambered 300 WM. Can anybody see a problem in that conversion? __________________ I used to love being able to hit hard at 1000 yards. As I get older I find hitting a mini ram at 200 yards with the 22 oddly more satisfying.