Quick Tip: What Is "Blueprinting" an Action?

Published on June 3, 2021
Duration: 4:15

This guide details the process of 'action blueprinting' or 'action truing,' a gunsmithing technique to enhance rifle accuracy and reliability. It involves precisely aligning critical components like the barrel threads, receiver shoulder, recoil lug, and bolt lugs. Instruction is provided by Caleb from Brownells, highlighting the importance of concentricity for optimal performance.

Quick Summary

Action blueprinting, or action truing, is a gunsmithing process that precisely machines a rifle's action components to ensure perfect concentricity with the bore and squareness between critical surfaces. This enhances accuracy and reliability by ensuring consistent lock-up and bolt cycling, making it a crucial step for custom rifle builds.

Chapters

  1. 00:00Introduction to Action Blueprinting
  2. 00:47Truing the Barrel and Receiver
  3. 01:51Bolt and Receiver Lug Alignment
  4. 02:41Benefits and Custom Actions

Frequently Asked Questions

What is action blueprinting in firearms?

Action blueprinting, also called action truing, is a gunsmithing process that precisely machines a rifle's action components. The goal is to ensure perfect concentricity with the bore and squareness between critical surfaces like the receiver, barrel threads, and bolt lugs for enhanced accuracy and reliability.

Why is truing the bolt lugs important for rifle accuracy?

Truing the bolt lugs ensures they make full, even contact with the receiver's shoulder. This consistent lock-up minimizes play, manages recoil more effectively, and prevents inconsistencies that can negatively impact shot placement and overall rifle accuracy.

What are the benefits of blueprinting a rifle action?

Blueprinting a rifle action significantly improves accuracy and reliability by ensuring all critical components are perfectly aligned and concentric. This precise fit minimizes stress, ensures consistent bolt cycling, and maximizes the potential of the rifle's components.

Are custom rifle actions pre-blueprinted?

Many high-end custom rifle actions are manufactured with blueprinting already incorporated. This process is a key reason for their higher cost, as it guarantees a level of precision and performance that standard factory actions may not achieve without subsequent gunsmithing.

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