I know the standard for making 338 EDGE is to neck up 300 RUM. I was given some 7mm RUM brass and looking at the case specs they are the same as 300RUM. I ran a couple through my Redding/DE 338 EDGE die with the tapered expanding button. The finnished product has a slightly steeper shoulder and shorter neck. As my 338 EDGE isn't done yet I can't run a sized case into the chamber to check fit. Has anyone tried 7MM RUM?
7mm RUM to 338 EDGE
- Thread starter fatboyz
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