Choosing the right shotgun choke is essential for any shotgun enthusiast, whether you’re hunting, shooting clays, or hitting targets on the range. A shotgun choke controls the spread of shot pellets, making it an important factor in achieving accuracy and effective range. In this comprehensive guide, we’ll walk you through everything you need to know about shotgun choke tubes, their various types and how to choose the right one for your shooting situation. This article is packed with insights to help you make an informed choice and enhance your shooting performance.

What Is a Shotgun Choke and How Does It Work?

A shotgun choke is a device inserted at the muzzle end of a shotgun’s barrel to control how tightly or widely the shot pellets spread after being fired. By adjusting the amount of constriction at the muzzle, a choke determines how the pellets disperse, which can significantly affect your accuracy. The tighter the choke’s constriction, the narrower the shot pattern, which is ideal for long range shots. On the other hand, a more open choke allows the pellets to spread out more quickly, making it suitable for close range shooting.

Shotgun chokes come in a variety of types, including fixed chokes (built into the barrel) and screw in chokes, which can be easily replaced depending on the shooting situation. The development of interchangeable screw in chokes by shotgun manufacturers has increased the versatility of shotguns, allowing shooters to tailor their firearm to specific shooting environments, competition and game.

Choke tubes of various constrictions allow for more precise control over the spread of shot, and understanding the role of different chokes is key to improving your shooting accuracy.

Why Do You Need the Right Shotgun Choke?

Choosing the right shotgun choke can make all the difference in hitting your target, whether you’re shooting at 30 meters, 40 meters, or beyond. A shotgun’s performance relies heavily on the pattern density produced by the choke. By selecting the proper amount of choke constriction, you can ensure that the percentage of shot inside the target zone is optimised for your specific shooting needs.

For hunters, having the right choke is crucial for hitting fast moving or distant game. For example, a full choke keeps the shot tightly grouped, making it easier to hit waterfowl at long distances. Conversely, for upland bird hunters, an open choke such as an improved cylinder is preferable, as it provides a wider shot pattern to catch birds in flight at shorter ranges.

In competition, such as skeet or trap shooting, using the right choke improves your chances of hitting clay targets. A cylinder choke or improved cylinder choke is ideal for the quick, close-range shots typical in skeet, while a modified or improved modified choke is better suited for trap or field and game, where the targets are launched farther from the shooter. Understanding choke patterns, and the effective range they provide, is essential to making the most of your shotgun’s performance.

Types of Shotgun Chokes: Full, Modified, Cylinder, and More

There are several types of choke constrictions, each designed to perform optimally at different ranges and for different shooting situations:

• Full Choke: The full choke offers the tightest constriction and is best suited for long range shots up to 40 meters. It provides a dense shot pattern, making it ideal for waterfowl hunting, fox drives and some trap shooting events. Full chokes concentrate about 70% of the shot pellets within a 30-inch circle at 40 meters.
• Modified Choke: A modified choke offers a moderate amount of constriction, suitable for shots between 30 and 40 meters. This choke is versatile, performing well for general hunting and mid-range target shooting. It keeps approximately 60% of the shot charge inside a 30-inch circle at 40 meters.
• Improved Cylinder Choke: With a slight constriction, the improved cylinder choke is ideal for short range shots (typically under 30 meters). This choke is often used for game birds like quail, rabbits, as well as skeet shooting. It allows about 50% of the shot to hit a 30-inch circle at 25 meters.
• Cylinder Choke: This choke provides no constriction at all, offering the widest possible spread of shot. A cylinder choke is typically used for close range shooting, or skeet, as it allows for a wide, even spread at short distances.

Each type of choke tube offers different advantages, depending on the distance and size of the target, as well as the types of shot being used. Shotguns equipped with screw in choke tubes allow shooters to easily swap out chokes depending on the situation, maximizing the versatility of their firearm.

 

 

How to Choose the Right Shotgun Choke for Hunting

When choosing the right shotgun choke for hunting, it’s important to consider the type of game you’re pursuing and the typical distance of your shots. Selecting the right choke can significantly increase your chances of success in the field.

Waterfowl Hunting: Waterfowl hunting requires non-toxic shot. The choice of a non-toxic shot can affect your choice of choke tube selection. Beretta does not recommend using chokes that constrict more than modified for Steel Shot. Improved, modified, light full, and full are chokes that we do not recommend for steel shot use. Check with the ammunition and choke tube manufacturers for their recommendations before making your selection.

Small Game Hunting: When hunting birds like quails or vermin like rabbits, the shots are usually taken at closer distances, often between 20 and 30 meters. An improved cylinder choke is a good choice here because it offers a wider spread, allowing for better accuracy on fast moving game.

Large Game Hunting: For larger game, such as feral pigs, some hunters use shotguns with slugs. In this case, a cylinder or improved cylinder choke is recommended.

Your effective range can also depend on the shot size you’re using and the type of shotgun shells being loaded. To ensure the best possible results, it’s crucial to match your choke to both the game and your shooting distance.

What’s the Best Choke for Trap, Skeet and Sporting/Field and Game?

In skeet shooting, targets are launched at close ranges, and quick reflexes are essential. The best choke for this discipline is of course a skeet choke, or alternatively an improved cylinder or cylinder choke, as these provide a wide, even shot pattern that increases the chances of hitting the fast-moving clays. Skeet and trap shooters often favor these open chokes because they offer a broader spread, which compensates for slight aiming errors or fast target movement.

For trap and field and game shooting, where targets are launched farther away, a modified choke or an improved modified choke offers the best performance. These chokes tighten the shot pattern just enough to improve accuracy at longer distances without sacrificing the shooter’s ability to hit fast-moving targets.

Using the right choke for the specific shooting situation improves your consistency and helps increase your overall score in competitive shooting events.

How to Test Your Shotgun Choke Pattern for Accuracy

The only way to know for sure whether you’ve chosen the right shotgun choke is to test it by shooting at a pattern board. A pattern board allows you to visualize how the pellets spread and evaluate the percentage of shot inside the target area.

Start by shooting paper at 30 meters or 40 meters with the choke and shotgun shell combination you plan to use. Look for holes in the pattern and assess whether the shot density is evenly distributed or whether some areas are lacking pellets. The ideal pattern will have the majority of the pellets hitting within a 30-inch circle, with no large gaps that would allow your target to escape.

If your pattern is too spread out, you might want to switch to a tighter choke. If it’s too tight, you may consider an open choke, such as a skeet or cylinder choke. Testing your shotgun’s choke pattern is an essential part of ensuring accuracy in the field or at the range.

What Is Choke Constriction and Why Does It Matter?

Choke constriction refers to the degree of narrowing at the end of the barrel. This constriction determines how the shot spreads once it leaves the muzzle, impacting both the accuracy and effective range of the shotgun.

A full choke, for example, has the tightest constriction, which keeps the shot pattern dense, making it ideal for long-range shooting at 40 meters or more. In contrast, a cylinder choke offers no constriction, allowing the shot to spread out quickly, making it perfect for close range shooting at 25 meters or less.

Understanding choke constriction is vital because the wrong amount of choke can either cause the shot to spread too thin or keep it too tight, both of which can result in missed targets. By selecting the appropriate choke tube, you ensure the pellets remain tightly grouped enough to hit the target without creating gaps or overshooting it.

Why Screw in Chokes Are a Game Changer

Screw in chokes have revolutionised the way shotguns are used, offering incredible versatility by allowing shooters to swap out chokes depending on the situation. Whether you’re preparing for a day of hunting, practicing at the range, or shooting in a competition, the ability to quickly switch between a full choke for long range shots or a cylinder choke for short range engagements enhances the shotgun’s performance.

Most shotgun manufacturers now offer a variety of screw in choke tubes designed to fit different shotgun models. These chokes can be easily replaced with minimal tools, giving you the flexibility to adapt your choke selection for each shooting session.

Tips for Improving Your Shooting with the Right Choke

Here are some actionable tips to help you improve your shooting performance with the right shotgun choke:

• Match Your Choke to the Distance: For long range shots, use a full choke to keep your shot tightly grouped. For shorter distances, switch to an improved cylinder choke or cylinder choke to maximize the spread of shot.
• Use a Pattern Board: Testing your choke on a pattern board at 30 meters or 40 meters will give you a clear idea of how your shot spreads and whether the choke selection is appropriate for your needs.
• Select Chokes Based on the Game: For larger game or waterfowl, use a full choke to ensure the pellets remain tightly packed for a clean hit. For smaller birds or fast moving targets, an improved cylinder choke will provide better coverage with a wider spread.

Key Takeaways for Choosing the Right Shotgun Choke

• Choke tubes control the spread of shot and can dramatically affect your shooting accuracy.
• A full choke is best for long-range shooting, while a cylinder choke is ideal for short-range targets.
• Use a pattern board to test your choke’s performance at various distances.
• Screw in chokes offer flexibility and allow for quick adjustments based on shooting conditions.
• Always match your choke to the type of game or target you’re shooting for optimal performance.

 

Mobilchoke

Introduced in the mid 1980’s the Mobilchoke tube system was first available for the model S687L over and under and later carried through virtually every model of fixed breech and semi-automatic shotgun. At this time the Mobilechoke is the only choke tube system adapted by Beretta to 12, 20, 28 gauge and .410. The Mobilchoke system continues to be the mainstay of the 680 series field grade over and under shotguns.

The conical parallel design of the Beretta choke tubes creates a more gradual taper inside the choke tube which gently transitions into a parallel section that runs to the muzzle end of the tube. The conical parallel design results in reduced shot deformation, improved pattern uniformity and increased pattern density.

Identification Features:

The following pertains specifically to 12 gauge Mobilchoke tubes. While the dimensions noted will vary for the Mobilchokes in 20 gauge, 28 gauge and .410 gauge tubes, identification is very much self evident.

• Barrels that use the Mobilchoke will typically be marked only with the gauge marking.
• Mobilchoke choke tubes will be marked PB or ST and the degree of choke. If the choke tube is steel shot compatible it will also be marked SP.
• The start of the threaded portion of the 12 gauge Mobilchoke tube is located a nominal 41.5 mm (1.63 inch) from the breech end of the choke tube.
• The length of the threaded portion is a nominal 9.15 mm (.360 inch).
• The major diameter of the choke tube thread is 20.62 mm (.811 inch).

Optima-Choke

In the year 2000 Beretta introduced the 12-gauge Optima-Bore barrel design into some of our competition shotguns. This new barrel utilized a larger internal bore dimension known to some as “back-boring” and required a new choke tube design to give the proper constrictions. The Optima barrels can be identified by locating the letters “OB” stamped next to the barrel gauge stamp. Barrels marked with the “OB” stamp will use the Optima-Choke system. This design features a longer internal transition taper into the choke constriction, making the overall length of this tube longer than the original Mobilchoke tube.

 Identification Features:

• Barrels that use the Optima-Choke will typically be marked OB immediately adjacent to the gauge marking.
• Optima-Choke choke tubes will be marked Optima-Choke.
• The start of the threaded portion of the Optima-Choke tube is located a nominal 50.78 mm (2.00 inch) from the breech end of the choke tube.
• The length of the threaded portion is a nominal 15.9 mm (.625 inch).
• The major diameter of the choke tube thread is 20 mm (.787 inch).
• At this time the Optima-Bore/Optima-Choke system is typically used on competition 391 series semi-automatic, older 680 series over and under shotguns and some other Semi-automatic guns.

Optima-Choke Plus

With the introduction of the model 391 Xtrema shotguns in 2003 the Optima barrel configuration was added into the 391 12-gauge line of field shotguns. In order to handle a higher volume of steel shot shells used in field hunting, the Optima-Choke tube was revised and manufactured with a thicker wall size. This revised choke tube was named the Optima-Choke Plus and featured the same Optima-Choke internal dimensions and performance but has a larger outside diameter and revised thread location.

Identification Features:

Barrels that use the Optima-Choke Plus will typically be marked 12 gauge 3 1/2″ with no other identifying code mark in the immediate area of the gauge marking

• Optima-Choke Plus choke tubes will be marked Optima-Choke-Plus.
• The start of the threaded portion of the Optima-Choke Plus tube is located a nominal 41.9mm (1.64 inch) from the breech end of the choke tube.
• The length of the threaded portion is a nominal 10 mm (.394 inch).
• The major diameter of the choke tube thread is 20.58 mm (.810 inch).

At this time the Optima-Choke Plus system is typically used on the Xtrema, Xtrema2 semi-automatic field guns and 471 Silver Hawk side by side shotguns (12 Ga.).

Optima-Choke High Performance (Optima-Choke HP)

With the introduction of the SV-10 Perennia and Prevail series over and under shotguns in 2008 a third Optima-Bore choke configuration was added, the Optima-Choke HP.  As noted above under the Optima-Choke Plus section, the extended use of high performance steel and metal alloy non-toxic shot imparts considerable stresses. In the case of the Optima-Choke Plus part of the solution was to use a choke tube design offering a thicker choke tube wall to better resist these forces. This in turn results in a heavier, larger diameter barrel.

One of the principal objectives in designing the Optima-Choke HP (OB HP) system was to develop a choke tube system that would withstand the rigors of the extended use of heavy payloads of steel/metal alloy shot while being able to retain the weight saving and handling characteristics of the lighter Optima-Choke barrel contour. To accomplish this Beretta engineers designed a choke system locating the threaded portion of tube a nominal 10 mm (.394 inch) further to the rear of the muzzle end of the tube then found on the Optima-Choke system. This effectively created an increase in wall thickness at the muzzle end of the choke tube where the greatest degree of choke constriction typically occurs and stresses are the highest without having to use the larger barrel contour.

Identification Features:

• Barrels that use the Optima-Choke HP will be marked OB HP immediately adjacent to the gauge marking.
• Optima-Choke HP choke tubes will be marked Optima-Choke-HP.
• The start of the threaded portion of the Optima-Choke-HP tube is located a nominal 40 mm (1.57 inch) from the breech end of the choke tube.
• The length of the threaded portion is a nominal 19 mm (.748 inch).
• The major diameter of the choke tube thread is 20 mm (.787 inch).

At this time the Optima-Choke HP system is typically used on most modern current model O/U Beretta’s including the 680 series, 690 series, DT11 and Ultraleggero as well as A400 Xplor Action and Xtreme Plus semi-automatic shotguns.

Choosing the correct choke is not only important for accuracy, but also for safety.

Choosing the correct shotgun choke isn’t just about performance, it’s a safety issue. A choke too tight for a given load, especially certain slugs or steel shot, can spike chamber pressure and risk damaging or bursting the barrel. The wrong choke can also throw a pattern too wide or too tight, raising the chance of a stray pellet strike. Always match your ammunition to your choke’s rating, and when unsure, check the manual or ask a professional before firing.

Furthermore, it’s essential to fit the right model choke (e.g. Optima, Optima HP) to your shotgun, fitting the wrong choke will almost guarantee barrel destruction which is a failure not covered by warranty. If you are unsure about the right choke for your gun, please contact Beretta Australia.