338 edge brass

[martyj]

I have some once fired RP brass out of my 300 rum.
Can I expand the neck on this brass for my 338 edge?
Do to the availability I dont want to screw it up for either rifle.
thanks

 

[MG386]

yes, you can use a 338 ultra die backed out with a .338 tapered expander to size your 300 RUM to 338EDGE