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To: SeeSac

Not for 7.62 x 51 Nato, which is identical to .308 Winchester, save for there being a thicker base in the military Nato rounds using Berdan primers, with overall case dimension and length being the same between those two.

30-'06 Springfield also utilizes 7.62mm or .308 nominal diameter projectiles, which isn't surprising in that it is something of the "parent" round, that the .308 or 7.62 Nato was derived from.
Look at the dimensional attributes in a bullet or powder reloading manual. The .308 is simply shorter, 51 mm standard overall cartridge length, as opposed to 64mm for the Springfield. Other case dimensions are much the same, same angle of shoulder, same taper, etc.

.303 Brit ain't .303 bullet diameter, though... More like .311 if memory serves...
Leave it to the British to come up with such a system --- one that uses case length, 3.03 INCHES, instead of chiefly referring to bullet diameter, like most everyone else, as the major component of the assigned nomenclature.

The .311 bullets can possibly be loaded into 7.62x54R cases in some instances, and work better than actual 7.62 or .308 nominal diameter projectiles (which are an inherently sloppy fit for such rifles, regardless of the "name", as the bores of 54R rifles can measure .312 or bigger) but then again in a few versions it could be .001 oversize in some of the many versions of 7.62x54R rifles which just might measure .310, so due caution must be observed.

In other words, if it blows up in one's face, or BLOWS UP one's face, don't anyone who reads this come crying to me just cuz 'ya didn't break out a USE a micrometer and carefully measure actual bore dimensions before trying it.

http://www.militaryfactory.com/smallarms/ballistics-chart.asp

7.92 is the bullet diameter of the 8x57 Mauser, which the Krauts used in their K 98 carbines, and some other weapons.

30 posted on 11/22/2010 4:21:14 PM PST by BlueDragon (....other than that we aint nothin' just good 'ol boys...)
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To: BlueDragon
Not for 7.62 x 51 Nato, which is identical to .308 Winchester

Still not 7.62.

7.92 is the bullet diameter of the 8x57 Mauser, which the Krauts used in their K 98 carbines, and some other weapons.

I believe that the K's (circa 1935) were .323 (8.2 mm).

32 posted on 11/23/2010 5:58:00 AM PST by SeeSac
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