I was wondering about the process involved in forming the brass.  Is this a .348 Winchester case necked up to .375 with no other changes; or are there changes in the shoulder that require fire-forming as well?

Thanks

Dutch,

All of the "Alaskan" case are an improve form of the .348 case and will involve expansion of the shoulder.  There are a number of "approved" methods for doing such.  Some use a small (15 -20 gr.) of a fast burning pistol powder (bullseye or such) and a cover (tissue paper to corn meal) and fire it straight up.  Or fire a moderate load in a neck expanded case.  All seem to work for those who recommend them, but have quirks that you will find.

On the other hand, you get a case that fits the chamber and will last several reloadings.

Hope this helps.

dclark