Videos tagged with Abrasive Grit Progression

This guide details the process of repairing pitting in older shotgun barrels using a Sunnen honing tool, as demonstrated by expert gunsmith Larry Potterfield. It emphasizes the importance of protecting the choke by measuring its taper and using a stop collar. The procedure involves a progression of abrasive grits, starting with 80-grit and moving to finer grits, while carefully monitoring barrel wall thickness and maintaining proper tool tension. This technique ensures the firearm can be safely used after addressing bore imperfections.

Larry Potterfield, founder of MidwayUSA, provides an expert guide on polishing a rifle barrel to prepare it for bluing. The process involves a meticulous progression of abrasive grits, starting with 120-grit for initial imperfection removal and progressing to 220-grit on a hobby lathe for a mirror finish. He demonstrates specific techniques like lengthwise polishing and cross-polishing ('shoe shine') to ensure an even surface, while also emphasizing the importance of protecting engraved lettering.