How to install a spring kit (trigger job) with Jerry Miculek

Published on January 4, 2013
Duration: 6:55

This guide details a trigger job on a Smith & Wesson Model 10 revolver, focusing on installing a custom spring kit for improved trigger pull. Expert instruction from Jerry Miculek covers disassembly, spring replacement, reassembly, and precise adjustment of the strain screw for optimal weight and reliability. Key techniques include using a pen to safely install the trigger return spring and dial calipers for strain screw measurement.

Quick Summary

Learn to perform a trigger job on a Smith & Wesson Model 10 with Jerry Miculek's spring kit guide. Key steps include careful disassembly, using a pen to install the trigger return spring, and adjusting the strain screw with dial calipers for a target 7.5 lb pull, considering primer hardness for reliability.

Chapters

  1. 00:00Introduction to Spring Kit
  2. 00:15Disassembling the Revolver
  3. 01:05Removing Factory Springs
  4. 01:52Installing the New Return Spring
  5. 02:30Installing the Miculek Hammer Spring
  6. 02:53Reassembly and Side Plate Installation
  7. 04:18Adjusting Trigger Pull Weight
  8. 05:51Fine-Tuning for Reliability

Frequently Asked Questions

What is the purpose of a trigger job with a spring kit on a Smith & Wesson Model 10?

A trigger job with a spring kit aims to reduce the trigger pull weight and improve the overall feel of the trigger on a Smith & Wesson Model 10 revolver, enhancing shooting performance and comfort. This involves replacing internal springs with lighter ones and making precise adjustments.

How can I safely install the trigger return spring during a S&W Model 10 trigger job?

A common 'shop trick' demonstrated by Jerry Miculek involves using a ballpoint pen to safely compress and guide the trigger return spring into the rebound slide, preventing slippage and potential injury during installation.

What tools are essential for adjusting the trigger pull weight on a Smith & Wesson Model 10?

Essential tools include a set of quality screwdrivers for disassembly and reassembly, and crucially, dial calipers for accurately measuring the strain screw projection to ensure proper fit and function after adjustment.

Why is primer hardness a factor when tuning a revolver's trigger pull?

Primer hardness affects how easily the hammer ignites the primer. If the trigger pull is set too light, it may not reliably ignite harder primers, leading to misfires. Adjustments must balance a light pull with sufficient force for ignition.

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