Welcome! Only place locally I know of that does long range is MALC training on the north side of Edinburgh. Hoosier Hills Rifle & Pistol club has a range that goes out to 300 or 400m if I remember correctly but they don't do too many classes I don't think. A membership there is maybe $125/yr?
Welcome neighbor. HHRP is a members only club and does extend to 400 yards now. It is open to non members for any of the matches and/or as a member's guest... https://www.hhrp.org/
This group shoots long range at Camp Atterbury so you definitely want to get in contact with them.