Elevate Your Shotgun's Performance: The Browning Diana Grade Invector-Plus Choke Tube for 12 Gauge

For serious shotgun enthusiasts, competitive shooters, and dedicated hunters, the pursuit of perfection in patterning is a never-ending journey. The Browning Diana Grade Invector-Plus Choke Tube stands as a beacon in this quest, recognized as the gold standard for those who demand uncompromising performance from their 12 gauge shotgun, particularly with Browning Citori models featuring back-bored barrels. This isn't just an accessory; it's a precision-engineered component designed to transform your shooting experience, delivering tighter, more consistent patterns that can make the difference between a near miss and a decisive hit.

Are you asking yourself, "What are the best choke tubes for my Browning Citori?" or "How can I achieve superior patterning with my shotgun?" If so, you've found your answer. The Diana Grade Invector-Plus series is meticulously crafted to address these very needs, providing an unparalleled blend of advanced material science, innovative design, and aesthetic excellence. Whether you're breaking clays on the sporting clays course, bringing down waterfowl, or pursuing upland game, the reliability and accuracy offered by these choke tubes are simply unmatched.

Unlocking Superior Patterning: The Science Behind Invector-Plus

The core of the Diana Grade's exceptional performance lies in its extended, longer choke taper, specifically engineered for optimal interaction with back-bored barrels. Unlike traditional choke tubes, the Invector-Plus system allows for a more gradual constriction of the shot charge as it travels down the barrel. This controlled compression minimizes shot deformation, reduces friction, and keeps the shot pellets rounder, ensuring a more uniform and dense pattern downrange. For shooters, this translates directly into a higher probability of hitting targets, whether they are fast-moving birds or challenging clay presentations.

Consider the common frustration of inconsistent patterns, where a seemingly perfect shot yields a scattered spread. This often stems from sub-optimal choke tube design or material. The Browning Diana Grade addresses this head-on, promoting a cleaner shot exit and a more effective shot string. This design philosophy is not just about tightening the pattern; it's about making that pattern more effective across varying distances and target types. This innovation ensures that more of your shot charge reaches the target, leading to more positive outcomes in competitive scenarios and more ethical results in the field.

The Pinnacle of Durability and Precision: Advanced Materials and Manufacturing

The foundation of any high-performance firearm component is its material construction, and the Diana Grade Invector-Plus choke tube exemplifies this principle. Each tube begins its life as 17-4 stainless steel bar stock. This specific grade of stainless steel is renowned for its exceptional strength, outstanding corrosion resistance, and remarkable durability, making it an ideal choice for the demanding environment of a shotgun barrel.

However, Browning takes precision a step further. Prior to machining, the stainless steel bar stock undergoes a critical heat-treatment process. This pre-treatment enhances the material's structural integrity, ensuring that the choke tube maintains its precise dimensions and resists deformation even under the repeated stresses of firing. The result is a choke tube with absolutely perfect concentricity – a critical factor for superior patterning. Concentricity ensures that the shot charge exits the barrel with perfect uniformity, preventing any uneven distribution that could lead to erratic patterns. For shooters, this means unwavering reliability and predictable performance, shot after shot.

Beyond the robust stainless steel core, the Diana Grade features an advanced titanium nitride (TiN) surface finish. This distinctive gold-colored coating is not merely for aesthetics; it's a functional layer that significantly elevates the choke tube's performance and longevity. Titanium nitride boasts an incredible hardness rating of 72 HRC (Rockwell Hardness C scale), making it extraordinarily resistant to wear and abrasion. This extreme hardness offers several key advantages:

• Exceptional Wear Resistance: The TiN coating protects the choke tube from the constant friction of shot pellets and wads, dramatically extending its lifespan and maintaining its performance characteristics over thousands of rounds.
• Reduced Plastic Buildup: Shotgun wads are often made of plastic, and over time, residue can accumulate inside choke tubes, affecting patterning and requiring frequent cleaning. The ultra-smooth, low-friction surface of the titanium nitride significantly reduces this plastic buildup, ensuring consistent performance and minimizing maintenance.
• Enhanced Smoothness: The slick surface allows for smoother passage of the shot charge, contributing to less shot deformation and improved pattern uniformity.

For the discerning shooter, these material choices and manufacturing processes translate into a choke tube that not only performs at the highest level but also endures the rigors of extensive use, maintaining its peak performance for years to come. This investment in quality is evident from the first shot fired, showcasing why it is truly considered a "gold standard."

Designed for the Shooter: Practical Advantages and Aesthetics

Beyond the technical specifications, the Browning Diana Grade Invector-Plus choke tube is designed with the shooter's experience firmly in mind. One of its most appreciated features is its extended design, which projects beyond the muzzle end of the barrel. This extension serves multiple practical purposes:

• Effortless Installation and Removal: The extended length provides an easy grip point, allowing for quick and tool-free installation and removal. This is a significant advantage in the field or at the range, where conditions can change rapidly and necessitate swift choke changes to adapt to different targets or ranges.
• Muzzle Protection: By extending beyond the barrel, the choke tube acts as a sacrificial barrier, protecting the delicate muzzle of your shotgun from accidental dings, scratches, and impacts. This preserves the crown of your barrel, which is crucial for maintaining accuracy.
• Visual Confirmation: The visible extension allows for immediate identification of the installed choke constriction, a small but significant convenience that prevents confusion during fast-paced shooting sessions.

And, of course, there's the aesthetic appeal. The lustrous titanium nitride finish provides a stunning contrast to the blued or stainless steel of your shotgun barrel. These choke tubes don't just perform beautifully; they look beautiful on the muzzle end of your Browning Citori, adding a touch of elegance and premium distinction to your firearm. This blend of form and function ensures that your shotgun not only performs at its peak but also looks its best.

Who Will Benefit Most from the Diana Grade Invector-Plus Choke Tube?

This premium choke tube is ideally suited for a wide range of shotgun users who prioritize performance, durability, and reliability.

• Competitive Clay Target Shooters: Whether you're competing in Sporting Clays, Trap, or Skeet, consistent patterns are paramount. The Diana Grade helps ensure reliable target breaks, contributing to higher scores and competitive advantage. Its easy-change design allows shooters to quickly adapt to varying station presentations.
• Serious Hunters: From waterfowl and upland birds to turkey hunting, the ability to deliver a dense, effective pattern is crucial for ethical and successful hunting. The improved pattern density and reduced shot deformation provided by these chokes mean more pellets on target, even at challenging ranges.
• Browning Citori Owners: Explicitly designed for 12 gauge Browning shotguns with back-bored barrels that utilize the Invector-Plus system, these choke tubes offer perfect compatibility and performance integration with your firearm. The Diana Grade choke is a natural upgrade, complementing the inherent quality of your Citori.
• Any Shotgunner Seeking a Performance Upgrade: If you're looking to maximize the accuracy and consistency of your 12 gauge shotgun, moving beyond standard choke tubes to a precision-engineered option like the Diana Grade Invector-Plus will deliver noticeable improvements.

Addressing Common Questions About Choke Tubes

Q: Why is a longer choke taper beneficial?
A: A longer, more gradual choke taper allows the shot charge to compress more smoothly, reducing pellet deformation and friction. This results in a more uniform shot string and a denser, more consistent pattern downrange, leading to improved accuracy and target breaks.

Q: How does titanium nitride improve choke tube performance?
A: Titanium nitride (TiN) provides an extremely hard (72 HRC) and slick surface. This reduces wear and tear on the choke tube, minimizes plastic buildup from wads, and allows for smoother passage of the shot, all contributing to more consistent patterns and extended product life.

Q: Is perfect concentricity really that important for patterning?
A: Absolutely. Perfect concentricity ensures that the choke's internal dimensions are uniform around its central axis. Any deviation can cause the shot charge to be off-center or unevenly compressed, leading to inconsistent and unpredictable patterns. The precision machining of the Diana Grade ensures this critical aspect.

Q: Are extended choke tubes worth the investment?
A: Yes, for many shooters. Extended choke tubes offer significant practical benefits, including easier installation and removal without tools, enhanced protection for the barrel's muzzle, and quick visual identification of the choke constriction, all while contributing to superior patterning.

Q: How does the Diana Grade compare to other choke tubes for the Browning Citori?
A: The Diana Grade represents Browning's premium line of Invector-Plus choke tubes. Its combination of 17-4 stainless steel, meticulous heat treatment, absolute concentricity, and advanced titanium nitride coating positions it as a top-tier choice for shooters seeking the highest level of performance, durability, and aesthetic appeal for their Browning Citori.

Maximizing Your Investment: Care and Maintenance

To ensure your Browning Diana Grade Invector-Plus choke tubes continue to perform at their peak for years to come, a simple routine of care and maintenance is recommended. After each shooting session, especially when using heavy loads or lead shot, remove the choke tubes from your barrel. Use a good quality bore solvent and a brass or nylon brush to thoroughly clean any lead, plastic, or powder residue from both the inside and outside of the choke tube. Pay particular attention to the threads on both the choke tube and within the barrel. A light application of gun oil or grease on the threads before reinstallation will prevent galling and ensure easy removal next time. Proper care ensures the exceptional quality of the 17-4 stainless steel and titanium nitride coating can continue to deliver optimal performance.

The Browning Diana Grade Invector-Plus Choke Tube for 12 gauge shotguns is more than just a component; it's a testament to precision engineering, advanced material science, and a deep understanding of what shooters need to excel. By choosing this choke tube, you're investing in a product that promises enhanced patterning, superior durability, and an elevated shooting experience. It's the ultimate upgrade for your Browning Citori, ensuring every shot counts.

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Product Specifications Summary

Feature	Detail	Benefit
Material	17-4 Stainless Steel	Exceptional strength, corrosion resistance, durability
Surface Finish	Titanium Nitride (TiN)	72 HRC hardness, reduced wear, minimized plastic buildup
Choke Gauge	12 Gauge	Standard for most sporting and hunting shotguns
Compatibility	Browning Invector-Plus, back-bored barrels	Optimized for Browning Citori and similar models
Design	Extended, Longer Taper	Easy removal/installation, superior pattern consistency
Concentricity	Absolutely Perfect	Uniform shot patterns, enhanced accuracy
Length	3.125 inches	Optimal extension for handling and muzzle protection
Weight	4.8 ounces	Minimal impact on firearm balance
UPC	023614201694	Unique product identifier
SKU	1130563	Stock keeping unit for inventory