"I donot beleive anyone is strong enough to force a 30/06 loaded cartridge into a 270W chamber using only the bolt----"
Ditto.
And the question isn't the throat, its the neck diameter of the chamber.
Comparing chambering a .308 in .270/.280.30-06 isn't even close to the same thing, the .308 is shrort enough to permit that, the 30-06 is simply too fat to fit into a .270. Like a horse making love to a rabbit, that just can't be done and survive even before it goes off.
MUCH more likely the cartridge was from an easily reformed -06 case loaded with a very fast powder. Bullseye would do that!
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