Great advice M-Tec! It would be condescending. And yes, our properties border each other.
I will state my case when I see him and not involve the other members. The more I ponder on this, the more it looks like I will be leaving deer camp for rifle season. A person who resists taking 10 seconds to make a gun safe, so he can prove he is the "boss", is letting emotions override common sense.
As to helping out...it is what we do for neighbors. It is over an hour round trip to town to pick up stuff. And some jobs need help/expertise he does not have. No reason to sever the relationship over this. Deer camp is less than two weeks, and they typically hunt less than 7 days. We are neighbors the rest of year.