How to Repair the Firing Pin on an 1869 Sharps Rifle | MidwayUSA Gunsmithing

Published on December 27, 2013
Duration: 4:18

This guide details the expert process of repairing a broken firing pin on a rare 1869 Sharps Rifle, a saddle ring carbine chambered in .50-70 Government. Master Gunsmith Larry Potterfield demonstrates precise machining techniques, including facing the old pin, drilling for a new tip, and using Loctite for secure attachment. The repair is verified with precision measurements and culminates in successful range testing, showcasing advanced gunsmithing skills.

Quick Summary

Expert gunsmithing on a rare 1869 Sharps Rifle involves precise measurement of firing pin protrusion (aiming for 0.078 inches) and careful machining. Tools like milling machines, digital calipers, and Loctite 290 are used to fabricate and install a new firing pin tip, ensuring reliable function of this antique firearm.

Chapters

  1. 00:00Introduction to 1869 Sharps Rifle
  2. 00:37Disassembly of Breech Block
  3. 01:13Measurement and Comparison
  4. 01:51Machining the Firing Pin
  5. 02:41Installing and Finishing New Tip
  6. 03:33Reassembly and Range Testing

Frequently Asked Questions

How do you remove the breech block from an 1869 Sharps Rifle for firing pin repair?

To remove the breech block, depress the plunger and rotate the lever pin until it clears the receiver mortise. Then, slide the breech block and extractor out from the bottom of the rifle. The firing pin can then be accessed by removing its retaining screw.

What is the correct firing pin protrusion for an 1869 Sharps Rifle?

According to expert gunsmithing procedures, the correct firing pin protrusion for an 1869 Sharps Rifle should be approximately 0.078 inches. This measurement is critical for reliable primer ignition without causing damage.

What tools are essential for machining a new firing pin tip?

Essential tools for machining a new firing pin tip include a milling vise, carbide end mills, a 1/8-inch center-cutting end mill for drilling, digital calipers for measurement, and a Dremel rotary tool with a cutoff wheel for trimming.

What type of adhesive is recommended for securing a new firing pin tip?

Loctite 290 (Green) is recommended for securing the new firing pin tip. Its wicking action is ideal for small, precise applications, ensuring a strong bond after curing.

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