Repairing Pitting in a Shotgun Barrel | MidwayUSA Gunsmithing

Published on May 15, 2013
Duration: 2:10

This video details the process of repairing pitting in older shotgun barrels using a Sunnen honing tool. It emphasizes the importance of measuring choke depth to prevent damage and outlines a step-by-step abrasive progression, starting with 80-grit stones and moving to finer grits like 150-grit. Proper tool adjustment and lubrication are crucial for effective polishing and maintaining barrel integrity.

Quick Summary

Repair shotgun barrel pitting using a Sunnen hone with polishing stones. Measure choke depth first, then use an electric drill to drive the hone with 80-grit stones, progressing to finer grits like 150-grit. Adjust the tool to maintain stone contact and monitor barrel thickness for safety.

Chapters

  1. 00:00Introduction to Barrel Pitting
  2. 00:17Using the Sunnen Honing Tool
  3. 00:36Measuring and Protecting Choke Depth
  4. 00:50Initial Polishing with 80-Grit Stones
  5. 01:21Tool Adjustment and Finishing with Finer Grits

Frequently Asked Questions

How do you repair pitting in a shotgun barrel?

Repairing shotgun barrel pitting involves using a specialized tool like a Sunnen hone with polishing stones. Start by measuring choke depth to set a stop collar, then use progressively finer grit stones, lubricated with oil and driven by an electric drill, to polish the bore while monitoring barrel thickness.

What tool is used to polish shotgun barrel pitting?

A Sunnen honing tool is commonly used for polishing shotgun barrel pitting. This tool features spring-loaded stones that apply pressure to the bore walls. It's typically driven by an electric drill and used with various grit stones, starting coarse and moving to fine.

How do you protect the choke when honing a shotgun barrel?

To protect the choke during barrel honing, first use a bore gauge to determine where the choke taper begins. Then, attach a stop collar to the honing tool's shaft to prevent it from entering the choke area and potentially damaging it.

What grit stones are used for shotgun barrel honing?

The process typically starts with coarser grit stones, such as 80-grit, to remove the majority of the pitting. After cleaning, the process is repeated with progressively finer grits, like 150-grit, to achieve a smooth, polished finish on the shotgun barrel.

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