Ballard Rifle & Cartridge 10 gauge Brass
 

Ballard Rifle & Cartridge made 10 gauge brass (and many other calibers and gauges), but sold that division to Rocky Mountain Cartridge. I cleaned my brass in the tumbler the other day and noticed a bulge about 0.7" up from the base. The case measured 0.839 at the base and 0.849 at the bulge. I contacted Dave Casey at Rocky Mountain for advice. He said that their 10 gauge brass is 0.854 per SAAMI and that my brass was undersized. I have retired all my Ballard Rifle & Cartridge brass. Just a heads up to those that may have BR & C brass.

Harry