Did I read in Burrard or somewhere that the cross-eyed aspect of db rifle barrels can cause the rim of the case to distort as it moves back against the standing breech? Could this explain reloading trouble like Dutch44's? Whoever put forward that assertion was probably not into reloading, as I recall him saying the only way to reuse the case would be to put it back in the same chamber, the same way it came out.