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Old November 17, 2012, 07:49 AM   #6
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Join Date: September 16, 2009
Location: I live in the foot of the Green Mountains of Vermont
Posts: 1,599
Mossberg used what they call Accro-Groove rifling , which is a six groove system . You should still be able to see it clearly when clean . Your 44US could be leaded up from a half century of use and poor maintainence ! I would use a good lead solvent instead of Kroil , first . Kroil is good for many things , but lead removal isn't one of them !
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