How to Polish a Rifle Barrel to Prepare It for Bluing | The Model 67 Project | MidwayUSA

Published on June 17, 2008
Duration: 1:30

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.

Quick Summary

Expert rifle barrel polishing for bluing involves a systematic grit progression from 120 to 220. Techniques include lengthwise polishing for initial smoothing and cross-polishing ('shoe shine') for evenness. Protecting engraved lettering with tape and using a hobby lathe for the final finish ensures a professional result.

Chapters

  1. 00:00Introduction to Barrel Polishing
  2. 00:21Cleaning and Degreasing
  3. 00:31Initial Polishing (120 Grit)
  4. 00:46Protecting Lettering
  5. 00:52Cross-Polishing (150 Grit)
  6. 00:58Refining the Surface (180 Grit)
  7. 01:03Final Lathe Polishing (220 Grit)

Frequently Asked Questions

What are the key steps to polishing a rifle barrel before bluing?

Start by cleaning and degreasing the barrel, then protect engraved lettering with tape. Progress through grits 120, 150, 180, and 220, using lengthwise and cross-polishing techniques. Finish with a lathe for a smooth surface.

What abrasive grits are recommended for polishing a rifle barrel?

The recommended progression starts with 120-grit for initial removal of imperfections, followed by 150-grit for cross-polishing, 180-grit for further refinement, and finally 220-grit for a smooth finish ready for bluing.

How can I protect engraved lettering on a rifle barrel during polishing?

Apply masking tape securely over the cleaned engraved areas before starting the polishing process. This prevents the abrasive from wearing down the lettering and preserves its clarity.

What tools are needed for polishing a rifle barrel for bluing?

Essential tools include a vise, block backer, masking tape, nylon brush, blue/rust remover, and cloth-backed abrasives in grits 120, 150, 180, and 220. A hobby lathe is recommended for the final polish.

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