PRIMOS TW CHOKE INVECTOR 20GA .570 Review

First Thoughts on the PRIMOS TW CHOKE INVECTOR 20GA .570

The PRIMOS TW CHOKE INVECTOR 20GA .570 promises a denser pattern for cleaner kills, a claim that immediately piqued my interest. As a seasoned hunter and tactical gear enthusiast, I’m always on the lookout for affordable upgrades that deliver tangible improvements. This choke tube from Primos, with its promise of a 30″ circle at 40 yards, seemed like a worthy candidate for testing.

I needed to tighten the patterns on my trusty 20-gauge for turkey season. The factory choke was spreading the shot too much, resulting in more wounded birds than clean harvests. I chose the PRIMOS TW CHOKE INVECTOR 20GA .570 primarily due to its advertised performance and accessible price point.

Unboxing was straightforward, the choke came in simple, no-nonsense packaging. The steel felt solid and well-machined; a visual inspection revealed clean threading and a smooth finish. It didn’t scream “high-end,” but it gave off a vibe of practical functionality, which is what I prioritize.

I considered a Carlson’s choke and a Patternmaster choke, but the Primos offered the tightest constriction at the lowest price. My initial excitement was tempered with a healthy dose of skepticism, hoping that it would truly live up to its claim. I was curious to see if it performed as advertised, or if it was just another budget-friendly product with inflated promises.

Real-World Testing: Putting PRIMOS TW CHOKE INVECTOR 20GA .570 to the Test

First Use Experience

My first field test took place at my local shooting range, patterning the PRIMOS TW CHOKE INVECTOR 20GA .570 with various loads. The weather was mild, with a slight breeze, providing decent testing conditions. I wanted to see how it performed with both lead and copper-plated lead shot.

The choke installed easily by hand; no tools were needed, as advertised. I started patterning at 25 yards, then moved back to 40 yards, firing at paper targets. The patterns were noticeably tighter than with my factory choke, a promising start.

There were no initial issues; the choke stayed firmly in place, and there was no noticeable recoil increase. The most surprising thing was the pattern consistency across different brands of ammunition. This suggested it was living up to its billing.

Extended Use & Reliability

After several weeks of use, primarily during turkey hunting season, the PRIMOS TW CHOKE INVECTOR 20GA .570 has held up exceptionally well. I’ve put approximately 200 rounds through it, using both lead and copper-plated lead loads. The choke still threads smoothly and shows no signs of loosening during firing.

There is minimal wear and tear. The finish has remained intact, with only slight discoloration from powder residue. The choke has proven easy to clean; a quick scrub with a bore brush and solvent removes any fouling.

Compared to previous aftermarket chokes I’ve used, the PRIMOS TW CHOKE INVECTOR 20GA .570 has exceeded expectations in terms of pattern density and consistency. It outperformed a more expensive choke that I had previously relied on. This highlights its value for the money.

Breaking Down the Features of PRIMOS TW CHOKE INVECTOR 20GA .570

Specifications

• Caliber: 20 Gauge. This choke is specifically designed for 20-gauge shotguns, ensuring a proper fit and optimal performance.
• Constriction: .570″. This tight constriction is designed to create a dense pattern, ideal for hunting applications where precision is crucial.
• Compatibility: Invector Choke System. This choke tube is designed to be compatible with shotguns using the Invector choke system, a common and widely supported standard.
• Material: CNC Milled Chrome Alloy Steel. The use of chrome alloy steel ensures durability and resistance to wear and tear, enhancing the lifespan of the choke tube.
• Ammunition: Shoots lead, copperplated lead, and HEVI•SHOT®. The versatility to handle different types of shotgun ammunition makes it suitable for various hunting scenarios and target shooting.

These specifications matter because they directly impact the choke’s performance and suitability for specific applications. The tight .570″ constriction creates a denser pattern, essential for ethical and effective hunting. The compatibility with the Invector system ensures it will fit a wide range of popular shotguns, making it a versatile upgrade.

Performance & Functionality

The PRIMOS TW CHOKE INVECTOR 20GA .570 delivers exceptional pattern density, living up to its claim of creating a 30″ circle at 40 yards. This tight pattern dramatically improves the effective range and accuracy of a 20-gauge shotgun. It performs admirably with both lead and copper-plated lead shot, offering consistent results.

Its primary strength lies in its ability to deliver consistent and dense patterns, essential for clean kills on game birds. A slight weakness might be that the extremely tight pattern could be unforgiving at very close ranges, requiring precise aiming. It meets and exceeds expectations, especially considering its affordable price point.

Design & Ergonomics

The PRIMOS TW CHOKE INVECTOR 20GA .570 features a simple, no-frills design that prioritizes functionality over aesthetics. The chrome alloy steel construction feels robust and well-made, inspiring confidence in its durability. The choke tube threads smoothly into the barrel and sits flush, creating a seamless appearance.

It is designed for tool-free installation and removal, making it user-friendly. There is no learning curve; it’s a simple screw-in replacement for your existing choke tube. The lack of any external knurling or texturing might make it slightly harder to grip with very wet hands, but this is a minor issue.

Durability & Maintenance

The chrome alloy steel construction suggests that the PRIMOS TW CHOKE INVECTOR 20GA .570 should last for many seasons of heavy use. The choke tube is resistant to corrosion and wear, ensuring reliable performance over time. Proper cleaning after each use is essential.

Maintenance is straightforward, requiring only a bore brush, solvent, and a clean cloth. The smooth internal bore makes cleaning relatively easy. The overall design is simple and robust, with no small parts that could break or require replacement.

Accessories and Customization Options

The PRIMOS TW CHOKE INVECTOR 20GA .570 is a standalone product and does not come with any additional accessories. However, it’s compatible with various choke tube wrenches, though these are not strictly necessary for installation or removal. The choke is a self-contained upgrade; it doesn’t require any further modifications to the shotgun.

Pros and Cons of PRIMOS TW CHOKE INVECTOR 20GA .570