2007-01-05 21:34:39 · 7 answers · asked by prodigystrikes 1 in Science & Mathematics ➔ Physics
The diameter of the projectile in millimeters.
2007-01-05 21:37:33 · answer #1 · answered by mmcall 2 · 0⤊ 0⤋
mm and calibre are two different ways of expressing the same thing the diameter of the bullet. mm is metric calibre is imperial (now) us as Britian is metric. MM is milimeters calibre is fractions of an inch ie 50 cal is half an inch diameter
2007-01-06 05:41:51 · answer #2 · answered by Sid B 6 · 0⤊ 0⤋
m.m. is the "calibre" of the projectile (bullet) That is it's diameter given in millimetres, eg 7.62 NATO, 5.56mm etc. This can also be expanded by the length of the round (projectile AND casing)which is also given in mm i.e 7.62X54 NATO where the projectile is 7.62mm in diameter X 54mm long overall. 7.62 equates as .308 cal and 5.56 works out to be .223 cal
2007-01-06 05:46:27 · answer #3 · answered by paul q 1 · 0⤊ 0⤋
It is the diameter of the bullet & also the diameter of the barrel though which the bullet travels.
2007-01-06 05:39:24 · answer #4 · answered by John C 2 · 0⤊ 0⤋
I think it refers to the diameter of the projectile inside the casing.
2007-01-06 05:36:15 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Micro Motion
Metric Motion
Millimeter
Any of the above make sense????
2007-01-06 05:40:28 · answer #6 · answered by FOREVER AUTUMN 5 · 0⤊ 0⤋
yeah what they said, millimeter calibre is like 9mm or .357mm
2007-01-06 05:38:54 · answer #7 · answered by jokerswild 4 · 0⤊ 1⤋