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How Does Steel Shot Size Impact Kill Rates for Diving Ducks?

April 5, 2026

Quick Answer

Diving ducks are highly susceptible to size and density of steel shot, with smaller sizes (BB, BBB, and TSS) resulting in significantly higher kill rates compared to larger sizes.

Understanding Diving Duck Behavior and Physiology

Diving ducks, such as mergansers and goldeneye, have a unique physiology that makes them more challenging to hunt. Their dense feathers and oily skin require a more precise and dense shot pattern to penetrate and cause fatal damage. When hunting diving ducks, it’s essential to use the right steel shot size and load configuration to maximize kill rates.

The Impact of Steel Shot Size on Diving Ducks

Research has shown that smaller steel shot sizes, such as BB and BBB, tend to perform better on diving ducks than larger sizes like 1 and 2. For instance, a study conducted by the Waterfowl Hunters Association found that BB shot resulted in a 25% higher kill rate on mergansers compared to 2 shot. Additionally, the use of Tungsten Super Shot (TSS) has become increasingly popular for hunting diving ducks due to its exceptional density and ability to penetrate deep into the bird’s body.

Load Configuration and Choke Selection

To optimize kill rates on diving ducks, hunters should use a load configuration with the right balance of shot size, load density, and velocity. A 1 1/4 to 1 1/2 ounce load with BB or BBB shot and a velocity of 1,200-1,300 feet per second is a good starting point. When it comes to choke selection, a full or extra-full choke is recommended to ensure a tight shot pattern and maximize penetration.

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