As you would find, the statue does not require you to be the owner (illegal or otherwise) what it requires 'is' that you are in 'possession' of the gun. It's hard to argue the person shooting the gun did not possess it.
The 2nd part is why I suggested the question of whether the person trying to disposses the illegal holder was aware that he was carrying illegally.
You can't do those things. There is a penalty for them. But one of those penalties can't be that you should allow death or bodily harm come to you. I really don't see the conflict here.
You do all that training and spend that money coz your freedom is worth more than wasting a year in jail for an illegal gun charge you can avoid.
Again, the penalty for illegally open carrying due to age is a misdemeanor. Your argument would suggest it should bar someone from protecting against death or bodily harm. That makes little sense to me.
And from.what I've been reading (at least on conservative sites) this may all be moot anyway, as there is a hunting exception for 16 and 17 year-olds to open carry a riffle so long as it's under the supervision of an adult.
If that exception applies, this whole line of objection disappears. The way I read it, I don't think it should apply. But it's quite clear from Wisconsin's gun laws, that they are pro guns.
So those of us from anti-gun States may be taking a different angle at this than they are. We'll see how it plays out.