Quick Answer
A 12-gauge is generally better for duck hunting due to its wider spread and more effective range, but a 20-gauge can be suitable for smaller, enclosed spaces or for younger or less experienced shooters.
Shotgun Gauge Considerations
When it comes to duck hunting, the 12-gauge is often considered the gold standard. It offers a wider spread and more effective range, making it ideal for open fields and larger waterfowl. A 12-gauge shell typically has a 2 3/4-inch or 3-inch chamber, which can handle a variety of loads, from light to heavy.
Shotshell Load Options
However, a 20-gauge can be a good option for smaller, more enclosed spaces, such as rice fields or marshes. A 20-gauge shell typically has a 2 3/4-inch chamber and can handle loads with 1 1/4 to 1 1/2 ounces of shot. This smaller gauge is also a good choice for younger or less experienced shooters, as it requires less recoil and is generally easier to handle.
Effective Range and Spread
For open-water hunting, a 12-gauge with a modified or improved-modified choke is often the best choice. This choke constricts the shot pattern to around 30 inches at 40 yards, making it effective for larger waterfowl. Conversely, a 20-gauge with an improved-cylinder or cylinder choke is often the better choice for smaller spaces, as it maintains a wider spread and is less likely to over-penetrate.
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