Sir, it kinda depends on the gun. Some are bored for .311 to .312 bullets, and others are bored for .308. If .310s aren't working, I'd try .308s first. IIRC, Ruger bores the Mini-30 for .308 bullets. ComBloc guns typically are bored for .311s.
Hope this helps, and Semper Fi.
Ron H.
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Wishin' don't make it so.
Last edited by Ron H.; 01-12-2011 at 02:45 PM.
Reason: forgot something
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