Resizing .300RUM brass to .338Edge after 4 firings?

[Troutslayer]

I have a whole giant mess of brass that I have been using in my .300 ultra. Every day I think more and more that now is the time to step it up to .338 edge. Is that brass going to be too hardened to re-size?

 

[Moman]

I would say yes, it would be too hard to size up. I don't have an Edge (yet) but did read another post about using virgin brass for this.

 

[sniper2]

TRY anealing I didn't say it is going to work 100% but any saved....