Sporterizing the Mosin Nagant Part 5- Shortening the Barrel and Removing the Rear Sight Base

Published on December 5, 2010
Duration: 9:40

This video details the process of sporterizing a Mosin Nagant by shortening the barrel to 22 inches and removing the rear sight base. It covers essential gunsmithing techniques like precise barrel measurement, cutting with a hacksaw, squaring the muzzle with a belt sander, and achieving a professional finish using a Brownells muzzle facing tool and an 11-degree target crown cutter. The removal of the rear sight base is demonstrated using an oxy-acetylene torch to melt the silver solder.

Quick Summary

To sporterize a Mosin Nagant, shorten the barrel to 22 inches using a hacksaw and belt sander. Then, precisely face the muzzle with a Brownells tool and create an 11-degree target crown for accuracy. The rear sight base is removed by heating with an oxy-acetylene torch to melt the solder.

Chapters

  1. 00:00Measuring Barrel Length for Mosin Nagant
  2. 00:55Cutting the Mosin Nagant Barrel with a Hacksaw
  3. 01:54Squaring the Muzzle with a Belt Sander
  4. 03:00Facing the Muzzle with Brownells Tools
  5. 04:35Cutting an 11-Degree Target Crown
  6. 05:31Final Polishing of the Muzzle Crown
  7. 06:36Disassembling the Mosin Nagant Rear Sight
  8. 07:40Removing the Rear Sight Base with a Torch

Frequently Asked Questions

How do you shorten a Mosin Nagant barrel without a lathe?

You can shorten a Mosin Nagant barrel using a standard hacksaw for the initial cut, followed by a belt sander to square the muzzle. Precision finishing is then achieved with a Brownells muzzle facing tool kit and a drill.

What is the purpose of an 11-degree target crown on a rifle barrel?

An 11-degree target crown is crucial for rifle accuracy. It ensures the rifling ends cleanly and uniformly at the muzzle, preventing gas from disturbing the bullet's flight as it exits the barrel.

How is the rear sight base removed from a Mosin Nagant barrel?

The rear sight base is typically soldered on. It can be removed by heating the base to around 1200°F with an oxy-acetylene torch to melt the silver solder, then tapping the base off with a brass drift.

What tools are needed for sporterizing a Mosin Nagant barrel?

Essential tools include a hacksaw, belt sander, drill, Brownells muzzle facing and crowning tool kit, an oxy-acetylene torch, punches, and safety glasses. A brass drift is also useful for removing the sight base.

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