Member's Area - Machining & Subclass -
Class Characteristics - Parallel
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Parallel breechface marks - Brett Bromberg-Martin

Granular / parallel breechface marks - Todd Weller

Parallel breechface marks - Brett Bromberg-Martin

Parallel breechface marks - Brett Bromberg-Martin

Parallel breechface marks - Brett Bromberg-Martin

Parallel breechface marks - Aaron Brudenell

Parallel lines in Barrel - Steven W. Hughes

Parallel lines in Barrel - Steven W. Hughes

Parallel lines in Barrel - Alex Belt

Parallel marks on firing pin - Aaron Brudenell
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