Thanks so much for taking the time to contact the manufacturers.  We all should take an active role in this.  I've written Remington, and a few independent brass manufacturers in the past with little response (one told me they had no intention in creating brass unless there was an enormous demand for it... like somewhere in the neighborhood or 100,000 pieces).  I, for one, have no intentions in retiring my Krags anytime soon... and my herd of useable brass is starting to thin a little (9 cracked necks this season)... so I need to start thinking of replenishment.