Patterns
Boxbirder; To put a little more on the last note; the aerodynamics of spheres make the trajectory of any single pellet purely random. This allows the use of pure math statistics to estimate pattern variations. The random variation within a pattern is plus or minus the square root of the number of shot in the pattern.
There are 350 shot in an ounce of 7 1/2 shot. An 80% pattern of 1 to 1 1/4 ounce of 7 1/2 shot varies by about =/- 20 shot. A single pattern from a gun that averages a 75% pattern has an equal chance of being 70% or 80%. Don's experience and advice is very good.
Don't fret over choke dimensions; convince yourself you have a good gun by shooting patterns and picking the proper ammo match.
Best, Austin
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