You Can Get Better Patterns
The most uniform patterns with lead shot typically come at slower speeds. With less of a starting whack from the powder gas, fewer pellets are crushed. Similarly, the shot will slip through the forcing cone, down the bore, and out the choke with fewer deformities. As a result, more pellets remain in the core of a pattern and you’ll have fewer fliers. This provides good pattern density and will help you to bring down more birds.