For those still thinking about a .410 for a kid or toting themselves, here's what I found the patterns to look like:

40 yds, 10" and 20" circles, 370NM loaded with 9x10.25, 90 deg summertime temps

Indian Creek .390
[Linked Image]

[Linked Image]

Factory EF
[Linked Image]

[Linked Image]

[Linked Image]