Miller why did you not copy my comment in its entirety.

A black man I worked with thought the foe tin shot farther and harder than a twelve because he said "it just goes to figure the foe tin would shoot father and tighter than a twelve guage because the barrel is smaller so it's gots to shoot tighter".

I gave up shooting and thinking about .410s long before I reached puberty.

I know you're a smart man but do you really think what you find and what gun makers like Purdey and others found a 100 years ago equal comparison ?