I have the same trouble as you. I just kept asking around, kind of like finding places to hunt. In fact, one guy I asked told me he had a range set up behind his shop and told me to go use it anytime. Another has some land along a river where I can shoot into a dirt bank. I shoot a lot so I go to the river ground most of the time because it is farther away from houses.

Talk to landowners and tell them what you're looking for. Be up front. If they say no, thank them anyway. If they say yes, ask them if they want to come out and sight in their rifles when you do. You might end up with private land to hunt on.