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Marco Califo · December 20, 2012, 12:14 PM

Where did you get that brass?
All military 308 is likely to be M-60/M240 machine gun fired. 30 caliber machine guns are the only widely used 308 weapons in the US military today. Don't try to tell me the M-14 is widely used.
This brass is tough to resize. Try these techniques, if the brass came from a reliable source. If not from a reliable source, you are on your own.
Either deprime with a decapper die, and decrimp (many ways and tools to do this) or buy with the primer pocket already processed. and
1. Lube: I have found that White Lithium grease made by Lucas Oil available at Home Depot works great and makes sizing these much easier.
2. Die: remove the neck expander mechanism, and body size only. When I do this, I neck size later with a Lee collet neck sizer die.
3. Annealing: Would help make the brass more workable, but I have not had to do this for the initial resizing.

December 20, 2012, 12:14 PM	#13
Marco Califo Senior Member Join Date: April 4, 2011 Location: LA (Greater Los Angeles Area) Posts: 2,598	Where did you get that brass? All military 308 is likely to be M-60/M240 machine gun fired. 30 caliber machine guns are the only widely used 308 weapons in the US military today. Don't try to tell me the M-14 is widely used. This brass is tough to resize. Try these techniques, if the brass came from a reliable source. If not from a reliable source, you are on your own. Either deprime with a decapper die, and decrimp (many ways and tools to do this) or buy with the primer pocket already processed. and 1. Lube: I have found that White Lithium grease made by Lucas Oil available at Home Depot works great and makes sizing these much easier. 2. Die: remove the neck expander mechanism, and body size only. When I do this, I neck size later with a Lee collet neck sizer die. 3. Annealing: Would help make the brass more workable, but I have not had to do this for the initial resizing. __________________ ............ Last edited by Marco Califo; December 20, 2012 at 11:26 PM.