30 years ago or so I had a chance to examine a Arisaka which had been rebarreled to .338 Winchester Magnum. According to Hatcher's Notebook, "testing to destruction" of the Arisaka actions showed the actions to be incredibly strong, loads which literally vaporized the brass in 125,000 psi range were contained by the action easily. Strong indeed!
Ni ellegimit carborundum esse!
Yours In Marksmanship