November 14, 2012, 09:19 PM
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#20
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Senior Member
Join Date: February 15, 2009
Posts: 8,927
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GeauxTide:
Quote:
The 308 cartidge family, 243, 260, 7-08, and 308, have excellent expansion ratios (bore versus capacity). My experience is anything past 22" gains very little with them.
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Then why do Palma rifles need 30 inch barrels to get 3000 fps with 155 grain bullets from a .308?
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