Dudes, the answers are very simple:
308/30-06 - 308.
30-06/270 - 270
270/280 - 280
22cf on deer - only if you're a consistently amazing shot
Norinco OK? - Sometimes.
No, the big question is 'what's the ideal bear defense cartridge/calibre?'

308/30-06 - 308.
30-06/270 - 270
270/280 - 280
22cf on deer - only if you're a consistently amazing shot
Norinco OK? - Sometimes.
No, the big question is 'what's the ideal bear defense cartridge/calibre?'