Find any group of shooting men and women around a table and often the conversation will include “Chokes” and the vagaries of the mystic powers of choke.
The term “choke” applies to the inner bore diameter around the muzzle, which is generally smaller than the diameter at the breech. The difference in the diameters is typically measured in thousandths of an inch – ranging from 0.005 of an inch up to 0.040 of an inch.