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What Are Breech Face Marks?

January 24, 2024 by Maria Kunar

What Are Breech Face Marks? Breech face marks- These marks come from the area surrounding the firing pin of the gun. After the cartridge powder is ignited by the firing pin striking the primer cup, tremendous pressure is exerted in the chamber of the weapon, forcing the back of the cartridge case against the breech

What Three Types Of Marks Are Left On The Casing After A Gun Is Fired?

January 24, 2024 by David Evans

What Three Types Of Marks Are Left On The Casing After A Gun Is Fired? This cartridge case shows the three distinct marks, or ‘signatures,’ impressed on its surface when it was fired by a gun: the firing pin impression (FP), the breech face impression (BF) and the ejector mark (EM). What are the marks