Hello, Herbert:
I highly respect your opinions. Am puzzled about turned brass cases having a relatively short life.
All I have used for years are RMC's for my Romano Spencers and those made by another shop for Romano for Maynards. These have always been made from top grade "cartridge" brass and RMC's are factory annealed.
In over twenty years, with many fired over a hundred times, none have failed or even displayed cracked mouths. Ok, Romano chambers are tight and cut with top-grade reamers so there is minimal expansion. I have never even had to anneal necks, but I impart minimal crimp via CH4D dies and no crimp via Larry's Maynard drive in dies cut with his chambering reamer. Larry Romano has supplied thousands of turned cases over many years and had no issues. He assures me that if any arose, he would have heard pronto because he walks the Firing Line at each N-SSA Fort Shenandoah Skirmish and inquires about how his rifles are performing. Interestingly, Larry remarked to me years back that he was still using RMC cases made 15 years prior by the first owner of the company. Materials, machinery, case dimensions, chamber dimensions and production steps are unchanged.
Worth noting:
A respected N-SSA skirmisher shared that the BAR stock used by RMC has its GRAIN alignment such that it is NOT the same as in DRAWN cartridge brass stock. The bar stock IS fine for 40,000 psi use, but not hot modern loads. Dave Casey, who owned RMC before the Outlands, told me he COULD get bar stock WITH THE SAME GRAIN ALIGNMENT as drawn brass, but shooters wouldn't pay the cost.
So, if you would, please share specifics about what you have learned. Many thanks.
Regards,
Kevin