Open carry is 100% legal ON PRIVATE PROPERTY.
Yep, it is lawful for a person at his home or place of business to own, possess, and lawfully use firearms and other weapons, ammunition, and supplies for lawful purposes, without a concealed carry permit.
But do you think this is likely to be considered "100% legal?":
The homeowner grabbed his Mouser and confronted the kids on his own property, shouting at them to get off the property.
Do you consider that "possession and or lawfully using the gun "for lawful purposes", or do think it would be considered "exhibiting the gun in a threatening manner, not in necessary self-defense"? Does shouting while pointing a weapon "skyward" constitute a threatening exhibition? Was the homeowner in imminent danger of death at that point? Had the trespassers demonstrated the ability and opportunity to harm him, and had they placed him in jeopardy by overt action?
Seems to me that would have to be decided by others after the fact--by investigators, the charging authority, the grand jury, and possibly a trial jury--based on evidence provided by the homeowner and by the other side. I think there would be plenty of conflicting testimony. And maybe a cell phone video or two...
And that's just a misdemeanor. There's also the very real risk of a serious assault charge. That would also be subject to the judgment of others, and potentially costly, win or lose.
All of that would far exceed my appetite for spending money, win or lose.
You guys keep ignoring the fact that the man was attacked on his porch.
Not I. At the point at which the man came onto the porch, the homeowner was protected by a presumption, albeit rebuttable, of imminent danger. But he had been shouting with a gun in his hands before that.
And suppose the gun had gone off, killing one of the homeowner's friends? Do you think he would be protected from civil action?