Excellent - thanks for posting the article. Sounds like it's a lost cause to try and save it in 458. I wonder if anyone has tried spacers in the magazine? My Israeli M98 Mauser has a spacer at the front of the magazine so that the short 308 cartridge is kept toward the rear so that the rim has a chance of being picked up under the extractor. Then again some old 98's will allow the extractor to spring over the rim if the case is pushed ahead of it into the chamber (mine won't). Some Israelis don't have the spacer and still work, but this is a different problem to the 458 issue.