From: Peter H Jackson, [EMAIL PROTECTED]
>Actually to be picky .308 and indeed .30-06 is .308" so if you round
>it off it would be .31", not .30"
No. 0.308" is the diameter or calibre of the bullet. The rifle
bore diameter/calibre is 0.300" (0.2998" at the breech
end for most Border 30 cal. barrels, so I generally use a 0.2996"
reamer pilot bushing. The bore diameter at the muzzle is usually
0.0002" smaller. Each barrel maker may vary these dimensions to
suit his intended clientele. For instance, there are a lot of
very tight TR barrels about from the 145 gn NRA RG days, because
the 145 RG bullet was way undersize so as to go easily up a
badly fouled barrel.
>I've had this problem before - I wanted a .380 so my FAC came back
>with a .38 on it and the dealer wouldn't sell me the .380! In point
>of fact the actual calibre is not .38 or .380, it's .355"
Try a brighter dealer. <g>
Anyway, the courts are not concerned with such trifles, or no-one
would be allowed to use a 243 Winchester rifle (calibre 6 mm or
0.237") to shoot deer in England (minimum calibre 0.240"
according to the Deer Act).
Rgds,
Peter.
www.jacksonrifles.com
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