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I would appreciate a brief tutorial on what it takes to get good patterns from a smooth bore shotgun. Of if not that, more direction toward the secrets of the past?. Who or what is Greener? What would be a reasonable expectation? An honest IC pattern?

Greener is the famous Greener shotgun Greener .
Ill send you a link when I get home to his writings on line .
One big thing though is that muzzle loading smooth bores are capable of regulating the load so as to produce the desired result . Very hard to do that with to the same extent with a cartridge .
One of the basic riles however is that by reducing the powder to shot ratio you tighten the group . Increase powder to shot ration opens the pattern.
Changing wads cards , number of each also changes pattern


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