Thread: Rebarrel M70
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Old April 14, 2013, 04:36 PM   #4
Bart B.
Senior Member
Join Date: February 15, 2009
Posts: 6,318
Reboring a barrel to a larger caliber typically ends up with less accuracy than the original.

Custom barrels typically have an inch or two cut off their muzzle end to get rid of the poor rifling quality in that area. Chamber reamers remove the bad stuff at the breech end.
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