Regarding the LN 1903's,

1. If I understand the design of the 1903 correctly it was made to withstand cartridge failure. It's very clearly stated that the rifle must pass firing two each of the following defective cartridges,
A. Crossed filled on head to nearly the thickness of the metal.
B. Cut at intervals diagonally through the extractor groove.
C. With four longitudinally cuts the whole length of the cartridge shell from rim forward.

2. I do not believe that a factory or Armory 30-06 cartridge has enough pressure, on it's own, to destroy a properly built 1903 regardless of what year it was made.

MP Sadly Deceased as of 2/17/2014