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10/9/2008 2:43:23 PM EDT
Do .308 and 30-06 have the same bullet diameter? (30cal?)
10/9/2008 2:47:31 PM EDT
[#1]
Yes.  From the .30 Carbine to the .300 Remington Ultra Magnum, all use .308" bullets.

Only foreign .30 calibers are a hair larger at .311 to as much as .313.

When Ruger came out with the Mini 30, they used a .308" barrel so domestic bullets would work.  They handle .311 milsurp just fine.
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