Exploring the Smith & Wesson Model 646: A Comprehensive Guide

A Look Back: The Model 646’s Genesis

The world of firearms is filled with iconic names and legendary designs, and Smith & Wesson undoubtedly occupies a prominent position in this pantheon. For over a century and a half, this American manufacturer has crafted some of the most recognizable and respected handguns in the world. Among their vast and impressive catalog, the Smith & Wesson Model 646 holds a unique place. This article provides a comprehensive exploration of this revolver, offering insights into its history, features, performance, and more.

The story of the Smith & Wesson Model 646 is interwoven with the evolution of handgun design and the changing landscape of ammunition. While Smith & Wesson’s reputation for producing high-quality revolvers was already firmly established, the Model 646 emerged during a period when the company was looking to adapt to the evolving demands of the shooting market.

Its creation was tied to the popularization of the .40 Smith & Wesson cartridge, often abbreviated as .40 S&W. This round, developed as a mid-range option between 9mm and .45 ACP, quickly gained traction among law enforcement agencies and civilian shooters alike. Smith & Wesson recognized the potential of a revolver chambered for this potent caliber and began the design and production of several models.

The Model 646, in particular, stands out due to its stainless steel construction and its specific design within the overall Smith & Wesson lineup. The goal was to create a reliable and durable revolver that could withstand the pressures of the .40 S&W round while offering the familiar handling and ease of use that characterized Smith & Wesson revolvers.

Examining the Key Characteristics

The Smith & Wesson Model 646 is a product of precision engineering and thoughtful design. Its core attributes are built around the needs of both the novice shooter and the experienced gun owner. Let’s examine its notable features.

The caliber of the Model 646, .40 S&W, is a key element. This cartridge offers a balance of stopping power, manageable recoil, and relatively high capacity, making the gun suitable for various applications, from target practice to self-defense. The cartridge delivers a decent amount of energy and a respectable level of accuracy potential.

Capacity is another important characteristic. The Model 646’s cylinder typically holds six rounds. This allows the user to have enough shots to address a situation. While capacity might be lower than that of a semi-automatic pistol, a revolver’s simplicity and reliability often make it a preferred choice for many.

The frame material, stainless steel, is a cornerstone of the Model 646’s durability. Stainless steel is renowned for its resistance to corrosion and its robust nature. This ensures that the revolver can withstand the rigors of regular use, various weather conditions, and extended periods of storage without significant wear and tear. The robust construction contributes to its longevity and the ability to withstand the high pressures generated by the .40 S&W round.

The Model 646 operates with a double-action/single-action (DA/SA) mechanism. In double-action mode, pulling the trigger both cocks the hammer and rotates the cylinder, firing the gun. In single-action mode, the hammer is manually cocked, and the trigger pull is lighter and shorter. This versatility is important for different shooting situations.

The barrel length can vary slightly depending on the specific production run, but it commonly features a barrel length that balances accuracy and ease of handling. This barrel length contributes to accuracy at a distance.

The Model 646 often comes with adjustable sights, offering shooters the ability to fine-tune their point of aim. This is critical for target shooting and hunting, where precision is essential. These sights allow for easy adjustments to compensate for wind and other factors.

The grips on the Model 646 are another important element. Factory grips provide a comfortable and secure hold, allowing the shooter to maintain control of the weapon during firing. Aftermarket options are available, enabling shooters to personalize the grip to their individual preferences.

The dimensions and weight of the Model 646 contribute to its overall handling characteristics. While not the smallest or lightest of revolvers, its size makes it easy to manipulate and offers a comfortable feel in the hand. Its weight, coupled with the stainless-steel construction, helps to absorb recoil, promoting accurate and controlled shooting.

Engineering and Operation

The mechanical design of the Smith & Wesson Model 646 is elegant and functional, reflecting the company’s long-standing expertise in revolver construction. This part is worth understanding for responsible ownership.

The revolver loads by releasing the cylinder, swinging it out, and then inserting cartridges into the chambers. After the cylinder is loaded, it swings back into the frame and locks into place. Unloading involves the same process, removing the cartridges one by one.

The trigger mechanism is the heart of the revolver’s operation. As mentioned earlier, the DA/SA mechanism allows for both a long, deliberate trigger pull (double-action) and a shorter, lighter pull after the hammer has been manually cocked (single-action).

The ejection system is also an important component. When the cylinder is open, the user can press an ejector rod to push spent casings out of the cylinder. The ease of this is an important factor for reloads.

Safety is a key consideration in any firearm design, and the Model 646 incorporates a transfer bar safety. This mechanism prevents the firing pin from striking the primer unless the trigger is fully pulled.

The design of the Model 646 reflects Smith & Wesson’s commitment to quality and dependability. The precise machining and fit of components ensure reliable operation and a long service life.

Accuracy and Performance on the Range

The Model 646 is well-regarded for its accuracy potential. The balance of the barrel length and the adjustable sights allow for precision shooting. While accuracy depends on many factors, including the shooter’s skill and the ammunition used, the Model 646 offers a platform capable of achieving tight groupings.

The choice of ammunition significantly impacts performance. The .40 S&W cartridge offers a range of bullet weights and designs. Finding the right ammunition for the tasks at hand is a critical part of accuracy.

Recoil management is another factor to consider. While the .40 S&W cartridge is not known for its extreme recoil, it can be noticeable. The Model 646’s weight and the design of the grips help to mitigate recoil, allowing for faster follow-up shots and improved control.

When compared to other revolvers, the Model 646 generally holds its own in terms of performance. Its stainless-steel construction and the .40 S&W chambering provide a balance between durability, stopping power, and ease of use that makes it attractive to many shooters.

Real-World Applications: Where the Model 646 Excels

The Smith & Wesson Model 646, with its combination of features, is suited for various applications.

Target shooting, from casual practice to competitive events, is one of the Model 646’s strong points. The adjustable sights and the comfortable grip allow shooters to refine their skills.

While the Model 646 is not typically considered the ideal choice for concealed carry due to its size and weight, it can be carried. The .40 S&W cartridge, the stainless steel frame, and the capacity all make this revolver a decent option.

Depending on local regulations and the choice of ammunition, the Model 646 could be used for hunting smaller game. The accuracy and power of the .40 S&W round are sufficient for a variety of hunting scenarios.

When considering home defense, the Model 646 offers certain advantages and disadvantages. The power of the .40 S&W cartridge can stop a threat effectively. Revolvers also offer simplicity and reliability. However, the limited capacity and the potential for slower reloads should also be taken into consideration.

Weighing the Advantages and Disadvantages

Like any firearm, the Smith & Wesson Model 646 has its strengths and weaknesses.

On the positive side, the Model 646 stands out for its durability. The stainless steel frame is resistant to wear and tear, making it a gun that can last for years. The reliability of the revolver design is another plus. They are less prone to malfunctions. Its accuracy potential is another key advantage. The adjustable sights and the barrel length allow for precision shooting. The overall design is simple and relatively easy to use. The aesthetics of the stainless-steel finish are also attractive to some.

On the other hand, the Model 646 has some disadvantages. The capacity of a six-round cylinder is lower than that of many semi-automatic pistols. Depending on the ammunition, recoil can be noticeable. The stainless-steel construction and the quality of the build will likely lead to a higher purchase price. Availability, as with all guns, can vary based on the market and the local gun laws.

Caring for Your Model 646: Ownership and Maintenance

Proper care and maintenance are essential to ensure the longevity and reliable operation of the Smith & Wesson Model 646.

Regular cleaning is essential. After each shooting session, the gun should be disassembled, cleaned, and lubricated. This removes any powder residue and debris that could hinder performance.

Lubrication is also critical. Applying a small amount of oil to key moving parts reduces friction and ensures smooth operation.

Storage is also key. Keeping the Model 646 in a secure gun safe or case is vital to protect it from unauthorized access.

Adhering to safety precautions is paramount. Always handle firearms with care and treat them as if they are loaded. Be sure of the target and what is behind it.

Spare parts and accessories can be found online and from gun supply stores. You can also often modify the Model 646 with different sights and grips, helping to make it feel better in your hands.

Comparison and Contrast

There are many other revolvers manufactured by Smith & Wesson and others that deserve attention.

The Smith & Wesson Model 610 is a similar revolver, chambered in .10mm Auto. These are the same frame size, but the Model 646 uses .40 S&W cartridges.

By comparing the Model 646 to these other revolvers, shooters can consider the pros and cons of each and determine the best option for their needs. The choice of caliber, frame material, and the overall design all influence the decision.

Value and Potential Collectibility

The Smith & Wesson Model 646 is a valuable firearm, depending on condition and scarcity.

The condition of the gun greatly impacts its value. Well-maintained examples, especially those with low round counts, will fetch higher prices. Rarity also plays a role. Limited-edition models or those with unusual features may be more sought after by collectors. The presence of the original box, paperwork, and accessories can also increase the value.

The Smith & Wesson Model 646 is a revolver that has the potential to become a collectible item, depending on the model. The combination of its history, its stainless steel construction, and its chambering in the .40 S&W cartridge makes it an appealing piece for collectors.

User Feedback and Opinions

Hearing from experienced owners of the Smith & Wesson Model 646 is valuable. The opinions and reviews of users can provide insight.

Owners frequently praise the Model 646 for its reliability, accuracy, and overall build quality. They often describe it as a robust and dependable revolver that is well-suited for target shooting and various other applications.

Common positive feedback includes the ease of handling, the comfortable grips, and the smooth trigger pull. Negative feedback may include some of the common issues seen with revolvers.

The Final Word

The Smith & Wesson Model 646 is an excellent revolver. It blends time-tested revolver reliability with the popular .40 S&W cartridge. Its features, from its stainless-steel construction to its adjustable sights, all make it a quality choice.

The Model 646 is well-suited for many applications, from target shooting to personal defense.

The combination of its advantages, which include its reliability, durability, and ease of use, and its disadvantages, such as its capacity and recoil, make it worth the consideration of any firearm owner.

Ultimately, the Smith & Wesson Model 646 remains a compelling choice for shooters looking for a dependable, accurate, and well-built revolver.

Resources

For more information, check out these resources:

The Smith & Wesson website.

Online gun forums.

Firearms publications.

This article is intended for informational purposes only and does not constitute legal or professional advice. Always follow all applicable laws and regulations regarding firearms ownership and use.

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