Any .50 shooters out there using Starline brass? I'd love to know rim and base dimensions of Starline's cases that are stamped .50 Alaskan. Thanks if you can help.

Bill, I am traveling now, but will measure it for you when I get in on the weekend.

Bill--- I made it in and took some measurements on 50 alakan cases;
rim diameter .610
rim thickness .70
head diameter .548

Buckeye: Thanks. I was hoping the rim was just a smidge wider, to better engage the extractor in a 12.7X44R Swedish rolling block, but it will probably work. Starline .50-70 brass is just a hair too wide in the rim. Starline .56-50 Spencer brass is perfect, but the case is too short.

Buffalo arms ! 348 winchester brass fits after sizing it ! I have one .