How to Mark the Caliber on a Rifle Barrel Presented by Larry Potterfield | MidwayUSA Gunsmithing
This video from MidwayUSA features Larry Potterfield, Founder and CEO, demonstrating the proper method for marking the caliber on a rifle barrel. Utilizing an electro-chemical etching machine, Potterfield illustrates a crucial step in the gun building process. The video emphasizes the importance of accurate caliber marking for identification and safety. It's a practical guide for gunsmiths and builders.








