Vern Humphrey
Member
It's not perfect but this is a fairly accurate rendering of how the cartridge (black lines) and the chamber (red lines) would fit.
I note the drawing shows a round-nose bullet -- which favors the cartridge NOT chambering. A spritzer with a long ogive would be a different story.
In any case, the fact is, people HAVE chambered 7.92X57 cartridges in .30-06 chambers and fired them -- often with unhappy results.