Understanding the Crucial Role of Action Screws
The Core Functionality
The Winchester Model 70’s action screws are far more than just fasteners; they are the critical link between the rifle’s heart (the action) and its platform (the stock). They are responsible for keeping the action securely attached to the stock, ensuring the rifle’s components are properly aligned for optimal accuracy.
Impact on Accuracy and Performance
Properly torqued and fitted action screws are fundamental for achieving consistent accuracy. Any play or movement between the action and the stock can introduce inconsistencies in how the rifle handles recoil and barrel oscillation during firing. A tight, solid connection ensures each shot begins from the same place and the same position.
Reliability and Longevity
Beyond accuracy, action screws contribute significantly to the reliability and longevity of your Winchester Model 70. They maintain the structural integrity of the rifle by keeping all its vital parts properly aligned and secured. Neglecting these components can lead to premature wear and tear on internal components.
Exploring the Different Types of Action Screws for Your Beloved Rifle
Factory-Issued Screws: The Foundation
Factory-issued screws are the standard hardware supplied with your Winchester Model 70. Typically made from steel, they provide a solid connection between the action and the stock. However, with wear and time, they can be subject to several issues.
Wear and Tear: Common Issues
Frequent use, tightening, loosening, and environmental factors can contribute to issues such as stripped threads, deformation of the screw head, and corrosion.
Venturing into the Aftermarket: Enhancing Performance
Aftermarket action screws provide opportunities for enhancing performance and durability. Made with higher tolerances and made from premium materials, they offer several improvements. The materials, head styles, and thread types are important considerations when selecting aftermarket action screws.
Material Choices: Strength and Durability
High-Grade Steel
Premium high-grade steels, like chrome-moly and other tool steels, provide excellent strength and wear resistance. They are often heat-treated to enhance durability and handle the stresses of consistent firing.
Stainless Steel
Stainless steel screws offer excellent resistance to corrosion, making them suitable for humid environments. However, some stainless steels may be softer than high-grade steels, which can increase their wear under extreme use. When choosing stainless steel, consider the grade, as some alloys offer superior strength.
Head Style Variations: Choosing the Right Tool Interface
Hex-Head
Hex-head screws are easy to work with, using a standard wrench or socket, providing a good grip for applying torque.
Socket-Head (Allen Head)
Socket-head (or Allen-head) screws use an internal hex drive, allowing access with an Allen wrench, a good option because they can provide better access in tight spaces.
Other Head Styles
Though less common, specialized head styles might be available, but these are usually not recommended for action screws.
Thread Types: Ensuring a Perfect Fit
Understanding the thread type is crucial. Common specifications have a specific thread pitch and diameter. Always make sure your aftermarket screws match your model’s requirements. Incorrect threads will not engage properly, leading to an insecure fit.
Action Screws in Pillar-bedded and Glass-bedded rifles
In pillar-bedded rifles, the action screws pass through steel or aluminum pillars, providing a solid and stable connection. In a glass-bedded rifle, the action is set into custom epoxy bedding.
Determining the Correct Action Screws for Your Model 70
Model Specificity: The Key to Compatibility
The Model 70 underwent various changes. Action screw dimensions (size, thread pitch, and length) can vary. The Pre-64 models also have differences in screw sizes and thread patterns from the post-64 models.
Key Steps to Identifying Your Screw Specs
Measure the Existing Screws
The most direct method is to remove and measure the existing action screws, using a caliper for accuracy.
Consult Manufacturer Specifications
Contact Winchester (if possible) or your rifle’s stock manufacturer for recommendations.
Thread Pitch Gauge
Use a thread pitch gauge to determine the thread pitch, and compare its blades to the threads.
Online Resources and Forums
Search forums for specific information on your Model 70 variant and action screw specifications.
Consider the Stock
If you have a new stock, use the appropriate screws for it.
Installation and Torque: The Keys to Performance
Preparing the Action and Stock: Before You Start
Make sure the rifle is unloaded and that you are working in a clean, well-lit area. Before installation:
Cleaning
Thoroughly clean the action screw threads in the action and the stock.
Inspection
Inspect the action and stock for damage, such as cracks or damaged threads.
The Torque Wrench: An Indispensable Tool
Using a torque wrench is essential for proper installation. It allows you to apply the correct amount of force.
Finding the right torque settings
Research and follow the recommended torque settings for your Model 70. Use the stock manufacturer’s recommendations. If no specific recommendations are available, use a common range of 40-55 inch-pounds for the action screws for wooden stocks.
Precise Application
A torque wrench will allow you to consistently apply the right amount of torque to the screws, preventing both under-tightening and over-tightening.
Torque Sequence
Tighten your action screws in a specific sequence. A common approach is to tighten the front screw first, then the rear action screw, tightening each screw in stages to reach the recommended torque.
Troubleshooting and Resolving Action Screw Issues
Common Problems
You may encounter problems. Fortunately, many issues can be resolved.
Loose Screws
Loose screws can be caused by regular shooting and environmental factors.
Stripped Threads
Damaged threads can make it difficult to keep screws tight.
Over-Torquing Damage
Excessive torque can damage the action or the stock.
Rust and Corrosion
Environmental factors accelerate wear and tear, increasing maintenance costs.
Possible Solutions
Tightening
First, try tightening loose screws using the correct torque.
Stripped Threads
If the threads are stripped, consider using thread inserts.
Replace Damaged Screws
Remove them, inspect them, and replace them.
Proper Lubrication and Anti-Seize
Use a high-quality anti-seize compound to prevent galling.
Cleaning
Regularly clean your action screws and surrounding area to remove debris.
Maintenance and Care: The Long Game
Essential Maintenance Practices
Regular Inspection
Inspect the action screws during each cleaning.
Torque Checks
Periodically check the torque of your action screws, especially if there is a change in accuracy.
Cleaning and Lubrication
Clean your action screws and apply a small amount of lubricant.
Replacement
Replace worn or damaged action screws immediately.
Upgrading Your Action Screws: A Step-by-Step Guide
What You’ll Need
The necessary tools:
- New action screws
- A torque wrench
- The appropriate screwdriver or Allen wrench
- A cleaning solution and brush
- Anti-seize compound (optional)
Step-by-Step Guide
- Safety First: Ensure your rifle is unloaded.
- Removal: Loosen and remove the action screws.
- Cleaning: Clean the threads.
- Lubrication (optional): Apply anti-seize to the threads.
- Installation: Insert the new screws.
- Tightening: Tighten in the correct sequence with a torque wrench.
- Final Check: Check that the screws are properly tightened.
- Test Fire: Test to ensure accuracy.
In Conclusion: Honoring the Legacy of the Rifleman’s Rifle
By understanding and properly caring for your rifle’s action screws, you are investing in its performance and longevity. Maintain the legacy of the Rifleman’s Rifle.
