Shotgun Choke Calculator

Pattern spread at distance from choke and load.

Choke type (0-6)

Distance (yards)

Shot size (#)

Payload (oz)

Tab to move between fields

Pattern diameter (in)

28.8

Pellets in 30" circle323

Total pellets in load461

Density (pellets/sq in)0.5

Effective range (yds)56

Pattern percentage (%)70%

How to Use This Calculator

Select Choke Type (0=Cylinder through 6=Extra Full) using the number input.
Enter Distance to the target in yards and Shot Size (e.g., #8 for skeet, #6 for field).
Set Payload in ounces (standard field load is 1 to 1.25 oz).
Review Pattern Diameter, Pellets in 30-inch Circle, Pattern Density, and Effective Range.
Use Pattern Percentage to select the optimal choke for your target distance.

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