Shot size - basic question

[Clark McCombe]

good to know, thanks.
Topic for discussion:
Does practicing with a .410 make you a better shooter when you use a 12?

[Bill Murphy]

Tens of thousands of rounds with any size shotgun. Knowing what to practice makes something of those rounds. Otherwise, they mean nothing. Many high volume shooters have never learned how to shoot.

[Researcher]

This may help. It is over 120 years old, but shot sizes haven't change.

1902 Shot Tables, Chilled.jpg