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A Guide to Disassembling and Cleaning the Winchester Model 70

In this article, you will learn about disassembling and cleaning the Winchester Model 70, a popular firearm. We will provide step-by-step instructions and a video tutorial to guide you through the process. Additionally, we’ll offer some historical context about the Winchester Model 70. By the end of this article, you’ll have the knowledge and resources to effectively maintain your Winchester Model 70.


The Winchester Model 70 is a legendary bolt-action rifle that has gained popularity among shooting enthusiasts for its accuracy, reliability, and durability. Whether you are a hunter, sports shooter, or collector, it is essential to properly maintain and clean your Winchester Model 70 to ensure its longevity and optimal performance. In this guide, we will provide you with step-by-step instructions on how to disassemble and clean your Winchester Model 70, along with some important safety precautions to observe throughout the process.


Before diving into the disassembly and cleaning process, it is essential to gather the necessary tools and ensure the firearm is clear of ammunition. The tools you will need include a cleaning rod, cleaning patches, a bore brush, solvent, lubricant, a soft cloth, a small brush (such as a toothbrush), and a screwdriver or Allen wrench for removing the stock. It is crucial to clear the firearm of any ammunition by double-checking the chamber and magazine to ensure there are no rounds present.

A Guide to Disassembling and Cleaning the Winchester Model 70

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Disassembling the Winchester Model 70

  1. Removing the bolt assembly:
    • Begin by ensuring the firearm is unloaded and pointing in a safe direction.
    • Pull the bolt to the rearward position.
    • Depress the bolt release, located on the left-hand side of the receiver, and fully remove the bolt assembly by pulling it straight out.
  2. Taking off the stock:
    • Locate the stock screws, typically located on the underside of the stock or near the trigger guard.
    • Use a screwdriver or Allen wrench to loosen and remove the stock screws.
    • Carefully lift off the stock, being mindful of any attached components or wiring.
  3. Dismantling the trigger mechanism:
    • With the stock removed, you will have access to the trigger mechanism.
    • Remove the trigger group assembly by unscrewing any retaining screws.
    • Once the trigger group assembly is detached, you can further disassemble it by following the manufacturer’s instructions. Be cautious not to lose any small components during this process.

Cleaning the Individual Parts

Once the Winchester Model 70 is disassembled, you can proceed with cleaning the individual parts to remove dirt, debris, and carbon buildup. Here are the recommended cleaning techniques for each component:

  1. Barrel cleaning techniques:
    • Attach a bore brush to your cleaning rod and saturate it with solvent.
    • Insert the cleaning rod into the barrel from the chamber end and scrub the bore using a back-and-forth motion.
    • Follow up by running clean, solvent-soaked patches through the bore until they come out clean.
    • Finish by running a dry patch through the bore to remove any excess solvent.
  2. Cleaning the bolt assembly:
    • Remove the firing pin and extractor from the bolt.
    • Scrub the bolt body, firing pin, and extractor with solvent and a small brush to remove residue.
    • Wipe them clean with a cloth and ensure they are thoroughly dry before reassembly.
  3. Maintaining the trigger mechanism:
    • Use a small brush, such as a toothbrush, to remove dirt and debris from the trigger group assembly.
    • If necessary, use solvent and a soft cloth to clean the components thoroughly.
    • Ensure all parts are completely dry before reassembling the trigger group.

A Guide to Disassembling and Cleaning the Winchester Model 70

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Inspecting and Lubricating

After cleaning the individual parts, it is crucial to inspect them for wear, damage, or signs of corrosion. Inspect the barrel, bolt assembly, and trigger mechanism carefully, paying attention to any abnormalities or indications of excessive wear. If any parts show signs of damage, it is recommended to consult a professional gunsmith for further assessment and potential replacement.

Once the inspection is complete, you can proceed with applying lubrication to essential components. It is essential to use a quality firearm lubricant designed specifically for use on guns. Apply a thin, even coat of lubricant to the following areas:

  • Barrel exterior (to protect against rust)
  • Bolt assembly (including the bolt body, firing pin, and extractor)
  • Trigger mechanism (including the sear and disconnector)
  • Any other moving parts or contact points within the firearm

Reassembling the Winchester Model 70

With the individual parts cleaned, inspected, and lubricated, you can now proceed with reassembling your Winchester Model 70. Follow these steps to ensure proper reassembly:

  1. Putting the trigger mechanism back together:
    • Refer to the manufacturer’s instructions or consult a diagram to ensure correct assembly.
    • Carefully reattach the trigger group assembly, ensuring all parts fit together snugly.
    • Secure any retaining screws to hold the trigger group in place.
  2. Attaching the stock:
    • Align the stock with the receiver and guide the trigger group assembly into the stock.
    • Carefully align the stock screws with their corresponding holes.
    • Firmly tighten the stock screws, but be careful not to overtighten and risk damaging the stock.
  3. Reinserting the bolt assembly:
    • Point the firearm in a safe direction and ensure it is unloaded.
    • Reinsert the bolt assembly by sliding it into the receiver until it fully engages.
    • Pull the bolt to the rearward position to lock it into place.

A Guide to Disassembling and Cleaning the Winchester Model 70

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Functionality Testing

After reassembling your Winchester Model 70, it is essential to perform functionality tests to ensure proper operation. Here are the recommended tests:

  1. Checking the bolt operation:
    • Test the bolt by opening and closing it several times, ensuring smooth and positive cycling.
    • Pay attention to any binding, resistance, or unusual noises during this process.
  2. Verifying trigger responsiveness:
    • Pull the trigger and observe the hammer or firing pin movement.
    • Ensure the trigger breaks cleanly and consistently without excessive creep or overtravel.

If any issues or abnormalities are observed during the functionality testing, it is recommended to seek professional assistance from a gunsmith.

Final Steps

After completing the functionality tests and ensuring the Winchester Model 70 is operating correctly, you can proceed with the final steps of the cleaning process:

  1. Removing any excess lubrication:
    • Wipe down the exterior of the firearm with a soft cloth to remove any excess lubricant.
    • Pay particular attention to the barrel, stock, and any visible components.
  2. Ensuring the firearm is safely stored:
    • Store the Winchester Model 70 in a secure and locked location, away from unauthorized access.
    • Consider using a gun safe or lockable storage case to provide additional protection.

A Guide to Disassembling and Cleaning the Winchester Model 70

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Safety Precautions

Throughout the disassembly and cleaning process, it is vital to observe the following safety precautions:

  1. Wearing appropriate protective gear:
    • Wear safety glasses and gloves to protect your eyes and hands from any potential hazards.
    • Working in a well-ventilated area is also recommended to minimize exposure to cleaning solvents.
  2. Avoiding accidental discharge:
    • Always ensure the firearm is unloaded before beginning any disassembly or cleaning procedures.
    • Point the firearm in a safe direction at all times and keep your finger off the trigger unless necessary.


Regular disassembly and cleaning are essential for maintaining the longevity and optimal performance of your Winchester Model 70. By following the step-by-step instructions provided in this guide, you can confidently and safely maintain your firearm, ensuring its accuracy, reliability, and durability for years to come. Remember to observe all safety precautions and consult a professional gunsmith if you encounter any issues or concerns during the disassembly or cleaning process.

A Guide to Disassembling and Cleaning the Winchester Model 70

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