I took my ex-wife shooting a couple of times before we were married. After marriage and with kids taking all our time and energy, we both lost interest for a long time. That changed when my son got old enough to start showing strong interest in guns. I mean, before we thought he even had heard of guns, he used to eat his toast in the shape of a pistol and play shooting it. I decided that the best response was to teach him how to use the real thing safely, rather than giving him toy guns, which we were both pretty against. So I started taking him and my daughter out and teaching them to shoot. This was during our breakup period, so my ex didn't participate.
So, to make a long story short, I have gotten back into guns in a big way, and my son is only slightly less interested than I. My ex is uncomfortable with our interest; she doesn't say much about it, but I can tell she thinks it's strange and maybe a bit dangerous. I think with a little persuasion, she would be an "anti," but knowing us probably moderates her views.