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Old December 6, 2012, 01:48 AM   #10
Tom Matiska
Senior Member
Join Date: April 12, 2000
Location: Wilkes-Barre, Pa
Posts: 1,026
Micro Groove may not be the issue, but maybe Marlin's faster 10" twist(vs Win's 12" twist). Usually folks shooting photon topedo loads out of fast twist 223's have these discussions, but I know Speer's 110 varminters are looking for an excuse to come apart at hot 30-30 levels. What 110 was the OP using???
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