🚨RARE 🚨 .25 ACP Contender Barrel

This guide details the process of building a custom 25 ACP barrel for a Thompson Center Contender. It involves using a specialized Lothar Walther barrel blank, precise drilling with an aircraft drill, chambering with a 25 ACP reamer, and finishing with muzzle crowning. The project aims to create a unique, scoped 25 ACP Contender, potentially exceeding the length of existing custom barrels.

Quick Summary

Building a custom 25 ACP barrel for a Thompson Center Contender involves using a Lothar Walther blank, an aircraft drill bit, and a 25 ACP chamber reamer. The process includes reaming, installation, chambering, and muzzle crowning, leveraging the Contender's center-fire frame compatibility.

Chapters

  1. 00:02Introduction to 25 ACP
  2. 00:13Personal Affinity for 25 ACP
  3. 00:29Backstory with Ken Kelly & Contenders
  4. 00:48The Rare 25 ACP Contender Barrel
  5. 01:14Comparing to a 22 LR Contender Barrel
  6. 01:26The Custom Barrel Project Begins
  7. 01:30Lothar Walther Barrel Blank
  8. 01:44Acquiring Tools: Aircraft Drill & Reamer
  9. 02:03Gunsmithing Steps: Reaming & Installation
  10. 02:12Center-Fire Compatibility
  11. 02:16Chambering and Muzzle Crowning
  12. 02:22The Final Custom 25 ACP Contender
  13. 02:33Planned Shooting Tests
  14. 02:43Conclusion & Project Tease

Frequently Asked Questions

What is involved in building a custom 25 ACP barrel for a Thompson Center Contender?

Building a custom 25 ACP barrel involves obtaining a Lothar Walther blank rifled for 25 ACP, using an aircraft drill bit for preparation, and a 25 ACP chamber reamer to cut the chamber. The process also includes installing the barrel, chambering it, and crowning the muzzle.

What tools are essential for creating a custom 25 ACP Contender barrel?

Essential tools include a Lothar Walther barrel blank rifled for 25 ACP, a specialized aircraft drill bit (approx. 0.020" larger than the insert), and a 25 ACP chamber reamer. A scope and mounting hardware are also needed for the final build.

Why is a Thompson Center Contender frame suitable for a 25 ACP conversion?

The Thompson Center Contender frame is already designed for center-fire cartridges. This inherent compatibility simplifies the process of installing a new center-fire barrel, such as one chambered in 25 ACP, without needing to modify the frame's ignition system.

What are the key gunsmithing steps for a custom barrel installation?

Key steps include reaming the barrel blank to the correct chamber specification, installing the barrel into the firearm's frame, precisely chambering the round, and finishing the muzzle with a crown to ensure accuracy and protect the rifling.

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