How to Install Magnum Crossbolts in a Rifle Stock | MidwayUSA Gunsmithing

Published on August 23, 2013
Duration: 4:46

This guide details the process of installing magnum crossbolts in a rifle stock, a crucial modification for high-recoil firearms. Larry Potterfield, an expert gunsmith, demonstrates precise techniques for reinforcing wood stocks to prevent splitting. The process involves careful measurement, drilling, counterboring, epoxy application, and finishing with ebony plugs for a durable and aesthetically pleasing result. This modification is essential for maintaining the integrity of stocks used with powerful cartridges like the .375 H&H Magnum.

Quick Summary

Reinforcing wood rifle stocks is essential for firearms chambered in medium to large caliber cartridges due to heavy recoil. Magnum cartridges like the .375 H&H Magnum can generate over 4000 ft. lbs of energy, potentially splitting unreinforced stocks. Installation of crossbolts, often using brass cups and ebony plugs, provides critical reinforcement, especially behind the recoil lug and in front of the trigger.

Chapters

  1. 00:00Introduction to Stock Reinforcement
  2. 00:35Muzzle Energy and Recoil
  3. 00:52Crossbolt Styles
  4. 01:42Internal Reinforcement
  5. 02:12Crossbolt Components and Layout
  6. 03:11Machining and Installation
  7. 04:23Finishing the Plugs

Frequently Asked Questions

Why is stock reinforcement necessary for magnum rifles?

Magnum rifles chambered in high-energy cartridges generate significant recoil (e.g., .375 H&H Magnum at 4000+ ft. lbs). This recoil can cause unreinforced wood stocks to split, particularly behind the recoil lug and in front of the trigger, compromising the firearm's integrity and safety.

What are the components of a typical magnum crossbolt kit?

A standard magnum crossbolt kit usually includes a 10-32 screw, two brass cups (escutcheons), and ebony plugs. These components work together to reinforce the stock against recoil stress and provide a finished appearance.

What is the correct counterbore depth for installing a magnum crossbolt?

The recommended counterbore depth for installing magnum crossbolts, as demonstrated in this guide, is approximately 0.350 inches. This depth ensures the brass cups are properly seated and allows for the ebony plugs to be fitted flush with the stock surface.

What are different methods for reinforcing rifle stocks?

Stock reinforcement methods vary, including visible crossbolts (like those from Kimber), covered bolts with wood plugs (Remington style), decorative brass escutcheons with ebony plugs, and internal steel reinforcement straps embedded in epoxy (Weatherby style).

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