Stan, I'll be interested to see more patterns from your .410. Right now, it's very clear that they don't shoot the same place. About the only thing positive you can say is that they're pretty much equally off center . . . and I don't think that's the "positive" you look for.
I didn't see you mention the distance at which you were shooting. If you're at 15-16 yards . . . wow. Back when I was shooting quite a few 35 yard test patterns, if I'd found a gun that was that far off, I would've been pretty much clear off my pattern sheets. The only one I ever found that bad via pattern sheets was a Hunter Special 16. Don't know whether the Hunter folks were regulating their boxlocks. Back in those days, I'd guess they were regulating their Elsies. But that Hunter Special might've made your .410 look good.
