What to Expect from the **Mossberg 90063 500 Barrel 20 Gauge 24″ Integral Scope Base Blued**
As an equipment specialist with a decade of experience across diverse environments, I approach every piece of gear with a critical eye, seeking to understand its real-world utility. The Mossberg 90063 500 Barrel 20 Gauge 24″ Integral Scope Base Blued arrived at a moment when a familiar platform needed a specific enhancement. My previous Mossberg 500 shotgun, a reliable workhorse, was due for an upgrade in its capacity for slug-based precision shooting. I was particularly drawn to this specific barrel for its integrated scope mounting system, a feature that promised to streamline optic installation and improve aiming consistency. While I briefly considered aftermarket mounts that clamp onto existing receiver bridges, the idea of a factory-integrated solution offered a cleaner, more robust approach. My initial impression upon unboxing was one of solid craftsmanship; the blued finish was deep and even, and the machining felt precise. There was an immediate sense of functional purpose, a promise of improved accuracy without unnecessary complications.
Real-World Testing: Putting **Mossberg 90063 500 Barrel 20 Gauge 24″ Integral Scope Base Blued** to the Test
First Use Experience
My initial testing grounds for this barrel were the familiar confines of a local outdoor shooting range, specifically a designated area for slug shooting. The weather was fair, with a slight breeze, typical for many hunting or target-shooting conditions. The true test, however, lay in the installation and subsequent accuracy. Swapping out the original barrel for the Mossberg 90063 500 Barrel 20 Gauge 24″ Integral Scope Base Blued was straightforward, a testament to Mossberg’s consistent design. I mounted a moderately priced, yet reliable, 2-7x32mm scope onto the integral base. The process was intuitive, and the secure fit of the scope rings onto the built-in base was immediately reassuring.
During the first range session, I focused on establishing baseline accuracy with standard 20-gauge rifled slugs. The 24-inch barrel felt well-balanced, and the weight distribution was manageable, even with the optic. I experienced no significant issues, and the barrel cycled ammunition smoothly. The integral scope base proved to be rock-solid, with no discernible shift or movement throughout the firing sequence.
Extended Use & Reliability
Over several months, this 20-gauge barrel has seen consistent use during both informal target practice and a few late-season hunting excursions. It has been exposed to light rain, dusty conditions on the trail, and the general rigors of being transported in a gun case. Despite this varied exposure, the blued finish has held up admirably, showing only minor handling marks in areas not typically visible.
Reliability has been exceptionally high; the barrel has consistently fed, fired, and ejected shells without a single malfunction. The fully rifled bore, designed specifically for slugs, has maintained its accuracy and appears to resist fouling remarkably well, requiring only a standard cleaning after each outing. Compared to previous barrel swaps I’ve done on other platforms, the seamless integration and consistent performance of this Mossberg barrel stand out. Maintenance is as simple as any other shotgun barrel: a quick clean with a bore snake and some CLP. There’s nothing particularly complex about its upkeep, which is a significant advantage for a component intended for frequent use.
Breaking Down the Features of **Mossberg 90063 500 Barrel 20 Gauge 24″ Integral Scope Base Blued**
Specifications
The Mossberg 90063 500 Barrel 20 Gauge 24″ Integral Scope Base Blued is engineered with specific applications in mind, primarily for enhanced slug accuracy. Its core specifications include a 20 Gauge caliber, a substantial 24″ barrel length, and a fully rifled bore. This rifled design is crucial for stabilizing saboted slugs, imparting spin that dramatically improves accuracy over smoothbore barrels.
The standout feature is the Integral Scope Base, a milled section of the receiver designed to accept scope rings directly. This eliminates the need for separate scope mount bases, which can sometimes introduce alignment issues or add unnecessary bulk. The barrel boasts a classic Blued finish, providing a degree of corrosion resistance and a traditional aesthetic. Its “Slug” type designation clearly indicates its intended purpose for accurate projectile delivery.
These specifications work in concert to create a dedicated slug barrel. The longer 24-inch length typically aids in achieving higher projectile velocities compared to shorter barrels, contributing to flatter trajectories. The fully rifled bore is the key to slug accuracy; without it, rifled slugs would tumble, severely limiting range and precision. The integrated scope base simplifies optic mounting, ensuring a stable and repeatable platform for aiming.
Performance & Functionality
In practice, the Mossberg 90063 500 Barrel 20 Gauge 24″ Integral Scope Base Blued excels at its intended task: delivering accurate slug shots. When paired with quality rifled slugs, I was consistently able to achieve tight groupings at 50 and 100 yards, which is more than adequate for most deer-hunting scenarios in dense cover. The inherent accuracy is a direct result of the fully rifled bore and the rigid mounting provided by the integral base.
The main strength of this barrel is undoubtedly its out-of-the-box accuracy potential for slugs. It transforms a standard Mossberg 500 into a more specialized and precise hunting tool. A minor weakness, if one can call it that, is its specialization. While excellent for slugs, it’s not ideal for scattergun uses like bird hunting, where a longer, smoother barrel might be preferred. It meets expectations for slug accuracy and exceeds them for ease of optic integration.
Design & Ergonomics
The design of this Mossberg barrel is robust and functional, reflecting the practical engineering typical of the Mossberg 500 series. The Blued finish is deep and even, offering a pleasing visual appeal and a practical layer of protection. The machining is clean, with no rough edges or tool marks evident on the barrel or the integral scope base.
The Integral Scope Base is a highlight, designed to be a seamless part of the barrel’s upper receiver profile. It provides a stable platform that feels incredibly secure once a scope is mounted. Ergonomically, it’s simply a barrel swap; the feel in hand is dictated by the shotgun receiver it’s attached to. However, the barrel’s weight and balance contribute to a generally steady aim, especially when a scope is in place. The lack of any adjustable sights, common on barrels with open sights, underscores its dedicated role for scoped shooting.
Durability & Maintenance
Durability is a strong suit for Mossberg shotguns, and this barrel is no exception. Made from quality steel with a well-applied blued finish, it is built to withstand the rigors of field use. I’ve observed no signs of significant wear, even after repeated firing and exposure to the elements. The fully rifled bore shows no pitting or degradation.
Maintenance is straightforward. A typical cleaning routine, involving a bore brush, solvent, and lubricant, keeps it in top condition. The integral scope base requires no special attention beyond ensuring the scope rings are properly torqued. There are no obvious weak points in its construction; it’s a solid piece of metal designed for longevity and reliable function in challenging conditions.
Accessories and Customization Options
This Mossberg 90063 500 Barrel 20 Gauge 24″ Integral Scope Base Blued is primarily designed for one purpose, and its customization options are therefore focused. The most significant “accessory” is, of course, the scope and scope rings that mount directly onto the Integral Scope Base. The base is designed to accept standard 20-gauge shotgun scope mounts, which are widely available.
Beyond optic selection, the primary customization is the choice of ammunition. The barrel’s fully rifled bore is optimized for saboted slugs, and selecting different brands and types of these slugs will yield varied performance. There are no user-replaceable parts on the barrel itself, making it a non-customizable component in that regard. Its compatibility lies in accepting standard scope mounts and firing standard 20-gauge slug ammunition.
Pros and Cons of **Mossberg 90063 500 Barrel 20 Gauge 24″ Integral Scope Base Blued**
Pros
- Excellent slug accuracy: The fully rifled bore significantly enhances precision with rifled slugs.
- Integrated scope base: This simplifies optic mounting and provides a very stable, reliable platform.
- Durable blued finish: The classic blued finish offers good protection and aesthetic appeal.
- Direct replacement: Designed as a drop-in part for Mossberg 500 platforms, ensuring easy installation.
- Dedicated slug performance: Optimized for slug ammunition, making it a specialized yet effective tool.
Cons
- Specialized use: Not ideal for general purpose shotgunning; its fully rifled bore is less suited for buckshot or birdshot.
- No iron sights: Lacks open sights, meaning a scope or red dot is essentially required for aiming.
- Limited customization: Beyond ammunition choice and optic selection, there are no user-replaceable parts on the barrel itself.
Who Should Buy **Mossberg 90063 500 Barrel 20 Gauge 24″ Integral Scope Base Blued**?
This barrel is an exceptional choice for any hunter who uses a Mossberg 500 platform and intends to hunt medium to large game like deer, particularly in areas where slugs are mandated or preferred. It’s perfect for those who value out-of-the-box accuracy for slug shooting and want a hassle-free way to mount a scope. If you’re looking to convert a standard hunting shotgun into a more precise slug gun without the fuss of aftermarket mounts, this is an ideal solution.
Conversely, if you primarily use your Mossberg 500 for upland bird hunting, waterfowl, or tactical applications, this specialized slug barrel would not be the best fit. You’d be better served by a barrel with a smoothbore or a fully interchangeable choke system. For anyone seeking iron sights, this model is also not suitable. A must-have accessory is, naturally, a quality scope and appropriate scope rings designed for shotgun barrel mounting, ensuring you can take full advantage of the integral scope base.
Conclusion on **Mossberg 90063 500 Barrel 20 Gauge 24″ Integral Scope Base Blued**
The Mossberg 90063 500 Barrel 20 Gauge 24″ Integral Scope Base Blued stands out as a highly effective and well-executed upgrade for the ubiquitous Mossberg 500 platform. Its ability to deliver impressive slug accuracy, combined with the convenience and reliability of an integrated scope base, makes it an excellent value proposition for its price point of $256.49. For hunters focused on accuracy with slugs, this barrel transforms a versatile shotgun into a dedicated, precision instrument.
I would unequivocally recommend this barrel to any Mossberg 500 owner looking to enhance their slug shooting capabilities. It’s a straightforward, robust, and accurate solution that simplifies the process of adding a magnified optic. If your needs extend beyond slug hunting, other barrel options might be more appropriate, but for its intended purpose, this Mossberg barrel is a top-tier choice.