There is a guy in Post that has a range, I don't think it is a public range but I used to shoot trap there. He has or a friend has some long guns. The range is used for the 4H trap kids but has a adhoc rifle range beside it. You might try to get in touch with Mark Kirkpatrick the guy that owns the range is named Monk not sure if that is his real name or nickname. You might ask Charles in Sharp Shooters he may know him. Not sure if he will let you shoot but worth a try.