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原帖由 jn_jona 於 9-11-2009 18:28 發表 ms爺爺,7.62x51唔係.308咩?
原帖由 Sacred 於 9-11-2009 19:38 發表 actually the bullet diameter is 7.8mm (.308 in) i don't know why it's called 7.62x51... beside, the military rounds(7.62x51) usually have higher pressure than civilian rounds(.308)
原帖由 Sacred 於 10-11-2009 17:52 發表 問題係,點解彈頭直徑明明係7.8mm(.308),7.92mm(7.62x39,7.62x54) 都會叫7.62?