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Iwas going to do the same, untill I did the math. Milling time blasting the fins to improve airflow hardness treatment, and the cost of plating and machining. So I just got them from L&N engineering. Let some one do the hard work. sometimes doing yourself is not that feasible in both time and expence.if cost is issue there are some cast barrels made by some of the Euorpean manufactures that have proven themselves over years of testing and R&D
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