How to Open a Fixed Choke on a Parker Shotgun | MidwayUSA Gunsmithing

Published on May 10, 2013
Duration: 1:48

This guide details the process of opening fixed chokes on a Parker Shotgun, as demonstrated by expert gunsmith Larry Potterfield. The procedure involves using specialized reamers and custom bushings to precisely reduce muzzle constriction, allowing for more open choke patterns suitable for specific shooting applications. Proper lubrication and manual control are emphasized for a safe and effective outcome.

Quick Summary

Expert gunsmith Larry Potterfield demonstrates how to open fixed chokes on a Parker Shotgun using specialized reamers and custom bushings. The process involves carefully reaming the barrel muzzle to reduce constriction, allowing for more open shot patterns suitable for specific hunting or shooting needs. Proper lubrication and manual control are crucial for safety and effectiveness.

Chapters

  1. 00:00Introduction to Choke Modification
  2. 00:15Measuring Current Choke Constriction
  3. 00:31Tooling and Preparation for Reaming
  4. 00:58The Reaming Process Explained
  5. 01:27Achieving Specific Choke Sizes

Frequently Asked Questions

What tools are needed to open fixed chokes on a shotgun?

To open fixed chokes, you'll need a specialized barrel reamer, a reamer shaft, custom centering bushings for precision alignment, a T-handle for manual rotation, and ample cutting oil for lubrication. Ensure the firearm is unloaded before starting.

What is the purpose of opening fixed chokes on a shotgun?

Opening fixed chokes allows a shotgun barrel to produce wider shot patterns, which can be advantageous for specific hunting situations or shooting disciplines requiring less constriction at the muzzle, adapting older firearms for modern use.

How much constriction is typically removed when opening a choke?

The amount of constriction removed varies based on the desired outcome. For example, moving from a Full choke (around 0.026-0.027 inches) to an Improved Cylinder (around 0.007 inches) involves removing approximately 0.019-0.020 inches of metal.

Is opening fixed chokes a safe procedure?

Yes, when performed by an experienced gunsmith using the correct tools and procedures, opening fixed chokes is a safe modification. Key safety aspects include ensuring the firearm is unloaded and using proper lubrication and controlled pressure during reaming.

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