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What is shotgun gauge?

What is Shotgun Gauge?

When it comes to shotguns, one of the most crucial factors to consider is the gauge of the weapon. But what exactly is shotgun gauge, and how does it affect the performance of your firearm? In this article, we’ll dive into the world of shotgun gauges, exploring the definition, history, and impact on your shooting experience.

What is Shotgun Gauge?

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Shotgun gauge refers to the internal diameter of the barrel in terms of the number of balls of a specific size that can fit inside the barrel. The gauge of a shotgun is measured by the number of balls that can fit inside the barrel, with smaller numbers indicating a larger diameter and larger numbers indicating a smaller diameter. For example, a 12-gauge shotgun has an internal diameter of approximately 0.729 inches (18.5 mm), while a 20-gauge shotgun has an internal diameter of approximately 0.615 inches (15.6 mm).

History of Shotgun Gauge

The concept of shotgun gauge dates back to the early days of firearms, when shooters used balls of lead or other materials to load their weapons. The gauge system emerged as a way to standardize the size of shotshells and ensure consistency across different manufacturers. In the 18th century, the British Crown decreed that shotshells would be measured by the number of balls of a specific size that could fit inside the barrel, with larger numbers indicating a smaller diameter. This system has remained largely unchanged to this day, with the most common gauges being 10, 12, 16, 20, and 28.

How Shotgun Gauge Affects Performance

So, how does shotgun gauge impact the performance of your firearm? Here are some key factors to consider:

Pattern and Spread: A larger gauge shotgun (e.g. 10-gauge) tends to produce a more consistent and tighter pattern at longer ranges, while smaller gauges (e.g. 28-gauge) may produce a looser pattern. This is due to the larger pellets and increased kinetic energy released by the larger gauge shells.

Range and Accuracy: Larger gauge shotguns typically have a longer effective range and are more accurate at longer distances, while smaller gauges may have a shorter effective range.

Power and Stopping Power: Larger gauge shotguns tend to have more power and stopping power, making them more effective for hunting larger game such as deer and turkey. Smaller gauges are often better suited for hunting smaller game such as doves and quail.

Weight and Balance: Larger gauge shotguns tend to be heavier and more cumbersome, while smaller gauges are often lighter and more manageable.

Ammunition Cost and Availability: Larger gauge shotshells tend to be more expensive and less readily available than smaller gauges.

Types of Shotgun Gauges

There are several types of shotgun gauges, each with its own unique characteristics and uses:

10-gauge: The largest gauge shotgun, typically used for hunting large game and heavy loads.

12-gauge: The most popular gauge shotgun, widely used for hunting, target shooting, and tactical applications.

16-gauge: A compromise between 12-gauge and 20-gauge, often used for hunting medium-sized game.

20-gauge: A popular choice for hunting smaller game, such as doves and quail.

28-gauge: The smallest gauge shotgun, often used for hunting small game and birds.

Conclusion

Shotgun gauge is a crucial factor to consider when selecting a shotgun, as it can impact the performance of your firearm in terms of pattern and spread, range and accuracy, power and stopping power, weight and balance, and ammunition cost and availability. By understanding the history and characteristics of different gauge shotguns, shooters can make informed decisions when choosing the right shotgun for their needs. Whether you’re a seasoned hunter or a recreational shooter, choosing the right gauge shotgun can make all the difference in your shooting experience.

Table: Shotgun Gauge Sizes

GaugeBarrel Diameter (inches)Barrel Diameter (mm)Typical Use
10-gauge0.77519.7Hunting large game
12-gauge0.72918.5Hunting and target shooting
16-gauge0.65516.7Hunting medium-sized game
20-gauge0.61515.6Hunting small game
28-gauge0.53513.6Hunting small game and birds

Bullet Points: Key Takeaways

• Shotgun gauge refers to the internal diameter of the barrel.
• The gauge system emerged in the 18th century to standardize the size of shotshells.
• Larger gauge shotguns tend to produce tighter patterns and have longer effective ranges.
• Smaller gauge shotguns are often lighter and more manageable, but may have shorter effective ranges.
• The choice of gauge shotgun depends on the type of game being hunted and the shooter’s preferences.

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