Originally Posted by Swampman700
They'd have a better chance of grouping because they wouldn't be as likely to be sub-sonic.


Lapua publishes a .508 G7 BC for the 155 scenar. My testing puts it closer to .490. My bet is(without looking at JBM) is the 155 out of a .308 will be supersonic farther than a 180CL easily in a 30/06 and probably a .300WM..

Luck....is the residue of design...
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