Looks like 338 RCM brass is rarer than 308 brass! Looked through several pages and all said out of stock. One supplier said they should get some in NOVEMBER 2013!!!

375 Ruger brass is available. I suppose if a person were truly desperate they could neck down, trim and turn/ream necks. The 375 is the same case only longer. Wouldn't that be a ton of fun?? Not!