The Smith & Wesson 640 is a versatile and powerful revolver that has gained popularity among gun enthusiasts and professionals alike. With its compact size and chambering in .38 Special and .357 Magnum, this revolver offers a balanced combination of concealability and stopping power. In this blog post, we will explore ten tips to help you unlock the full potential of your Smith & Wesson 640, covering various aspects such as customization, maintenance, and shooting techniques.
1. Choose the Right Caliber and Barrel Length

The Smith & Wesson 640 is available in two calibers: .38 Special and .357 Magnum. While both are excellent choices, your selection should depend on your intended use. The .38 Special is ideal for personal defense and concealed carry, offering a balance between recoil and stopping power. On the other hand, the .357 Magnum provides more firepower and is suitable for hunting or self-defense in rural areas.
Additionally, the barrel length plays a crucial role in the revolver's performance. The standard barrel length for the 640 is 1.875 inches, which offers excellent concealability. However, if you prioritize accuracy and extended range, you might consider a longer barrel, such as the 2.5-inch or 3-inch options. Longer barrels generally provide better accuracy and velocity but may sacrifice some concealability.
2. Customize for Comfort and Performance

One of the advantages of the Smith & Wesson 640 is its ability to be customized to suit your preferences and needs. Here are some customization options to consider:
- Grips: Replace the standard grips with aftermarket options for better ergonomics and comfort. Rubber grips can enhance your grip and reduce recoil, making shooting more enjoyable.
- Sights: Upgrade the factory sights with night sights or adjustable sights for improved accuracy, especially in low-light conditions. Tritium night sights are a popular choice for enhanced visibility.
- Trigger: A smooth and crisp trigger pull can significantly improve your shooting experience. Consider installing an aftermarket trigger kit to reduce trigger pull weight and enhance precision.
3. Master the Art of Double-Action Shooting

The Smith & Wesson 640 is a double-action revolver, meaning it can be fired in two ways: single-action and double-action. Understanding and mastering both modes of firing will make you a more versatile shooter.
- Single-Action: In single-action mode, the hammer is manually cocked, resulting in a lighter and crisper trigger pull. This mode is ideal for precise shooting at close ranges.
- Double-Action: Double-action mode allows you to fire the revolver without cocking the hammer. It provides a longer and heavier trigger pull but offers the advantage of being able to fire quickly in stressful situations.
Practice transitioning between single-action and double-action shooting to become proficient in both techniques. This skill will prove invaluable in various shooting scenarios.
4. Maintain Proper Grip and Stance

A proper grip and stance are fundamental to accurate shooting. When holding the Smith & Wesson 640, ensure your grip is firm but relaxed. Place your thumb along the spine of the grip, and wrap your fingers around the front and back straps. This natural grip will provide better control and recoil management.
Your shooting stance should be stable and comfortable. Adopt a modified Weaver or Isosceles stance, keeping your feet shoulder-width apart and your strong-side foot slightly forward. This stance offers a solid foundation for accurate shooting and allows for quick adjustments if needed.
5. Focus on Trigger Control

Trigger control is a critical aspect of accurate shooting. With the Smith & Wesson 640's smooth trigger, you can achieve exceptional precision. Practice pulling the trigger smoothly and consistently, applying even pressure throughout the pull. Avoid jerking or anticipating the shot, as this can lead to inaccurate shots.
Consider dry-fire practice to refine your trigger control. This technique involves practicing trigger pulls without live ammunition, allowing you to focus solely on the trigger pull and follow-through.
6. Practice Proper Breathing and Sight Alignment

Breathing and sight alignment are essential for accurate shooting. Take a deep breath before each shot, exhale slowly, and hold your breath momentarily as you squeeze the trigger. This technique helps to stabilize your body and reduce any movement that could affect your aim.
Align your sights properly by ensuring the front sight is centered in the rear sight notch. Focus on the front sight, and let your peripheral vision take care of the target. This sight alignment will help you place accurate shots consistently.
7. Load and Unload Safely

Safety should always be a top priority when handling firearms. When loading your Smith & Wesson 640, ensure the revolver is pointed in a safe direction, and keep your finger off the trigger until you are ready to fire. Use the half-moon clips provided with the revolver to load the rounds efficiently.
To unload the revolver, point it in a safe direction, and remove the cylinder. Hold the cylinder with your non-dominant hand, and use your dominant hand to push the ejector rod forward, ejecting the rounds onto a table or a safe surface.
8. Clean and Maintain Regularly

Proper maintenance is crucial to keep your Smith & Wesson 640 in optimal condition. Regular cleaning and lubrication will ensure smooth operation and prolong the life of your revolver.
- Clean your revolver after each use, paying attention to the cylinder, barrel, and action. Use a bore brush and solvent to remove any fouling or debris.
- Lubricate the moving parts, such as the cylinder, hammer, and trigger, with a high-quality gun oil or grease. Avoid over-lubricating, as this can attract dirt and debris.
- Store your revolver in a dry and secure location when not in use. Consider using a gun safe or a locking cabinet to prevent unauthorized access.
9. Practice Regularly

Like any skill, shooting requires regular practice to maintain and improve your proficiency. Set aside dedicated time for range sessions, focusing on different shooting drills and scenarios. Start with basic target shooting to work on your fundamentals, and gradually progress to more advanced drills, such as shooting on the move or rapid-fire exercises.
Consider joining a shooting club or finding a mentor who can provide guidance and feedback on your shooting technique. Regular practice will not only enhance your accuracy but also build your confidence and muscle memory.
10. Explore Holster Options

When carrying the Smith & Wesson 640 for concealed carry or open carry, selecting the right holster is crucial. Look for holsters that offer a secure fit, quick draw, and comfort. Leather or kydex holsters are popular choices, providing a balance between durability and concealability.
Experiment with different carry positions, such as inside the waistband (IWB), outside the waistband (OWB), or even ankle carry. Each position has its advantages and considerations, so find the one that suits your comfort, accessibility, and intended use.
Conclusion
The Smith & Wesson 640 is a versatile and reliable revolver that can serve various purposes. By following these ten tips, you can unlock its full potential and become a more proficient shooter. From choosing the right caliber and barrel length to mastering double-action shooting and maintaining proper grip and stance, each aspect contributes to your overall shooting experience.
Remember to practice regularly, customize your revolver to your preferences, and prioritize safety at all times. With dedication and these tips in mind, you'll be well on your way to becoming a skilled Smith & Wesson 640 operator.
How often should I clean my Smith & Wesson 640?
+It is recommended to clean your revolver after each use to maintain its performance and longevity. Regular cleaning will prevent the buildup of fouling and ensure smooth operation.
Can I convert my .38 Special 640 to .357 Magnum?
+No, it is not recommended to convert your .38 Special 640 to .357 Magnum. The two calibers have different chamber dimensions, and attempting such a conversion may result in unsafe conditions.
What are the benefits of using half-moon clips with the Smith & Wesson 640?
+Half-moon clips provide several benefits, including easier loading and ejection, reduced cylinder gap, and improved extraction. They are particularly useful for rapid-fire shooting and ensure consistent headspace.