I was going to make some persuasive statements about the large differences I've seen between chokes on the pattern board and in the field, but Devrep's pictures pretty much cover it.

I shoot a lot of .410 at upland game and like cylinder bore for the first shot and mod or full for the second shot, for my hilly and brushy quail hunting. I think the distance of increased effectiveness between cylinder and full on a .410 is in the neighborhood of 10-15 yards. YMMV