But we are not talking about a matter of faith, and it would be stretch to say gun ownership by law-abiding citizens is a matter of morals. Outside of that, it is just their opinion, just like mine.
As I said in another thread, I have been a Catholic for 65 years, served the Latin Mass, learned the old Catechism, went through Catholic grade school and high school and sent my kids through the same. I’ve been a Catholic music minister for 40 years. I only recently heard of the USCCB and its predecessors, or of bishops, as a group, having any say over anything. I would have thought that in 65 years, if it were important, I would have heard of it from a nun, or in a sermon or something. When I was growing up, we knew we had a bishop and he occasionally wrote a letter that got read in church, usually about contributing money to something.
This new era of activist bishops trying to exert influence in political matters is new to me and I don’t buy into it. From what I read, most US catholics agree with me. They aren’t listening to the bishops either. And how does being a priest all your life qualify you to have an opinion on this topic? Plus, as you say, the bishops are not even in complete agreement on this.