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Old 04-29-2011, 08:46 AM
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GoodOlBoy GoodOlBoy is offline
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Join Date: Jun 2002
Location: Deep east Texas
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One of the things I have found with Marlin micro groove rifling and lead is that for the best accuracy you have to actually bump the bullet size up slightly. My 336 loves lead so long as it is .311 diameter, not .308-.310. Found that out quite by accident when trying various brands of lead cast bullets.
One cast sight I had visited (cant remember the name) had mentioned that issue with Marlin micro groove rifling. I tried their larger cast bullets (.311) and bingo bango accuracy improved. They cast up to .312 lead for the 30-30 but I didn't try that large on mine.


GoodOlBoy
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