So let's talk logistics on the 7mm Mashburn Super...
Sounds like it will fit my Win M70 magazine just fine, JGS and PTG both have reamer specs on file.
Now what about dies and brass forming again?
Use .300 Win Mag brass, and then what? Run it through a neck bushing die? Then fireform?
Sorry for the dumb questions, never had to deal with this aspect of reloading before.
