Yes, it's legal.
(from U.S. Forest Service):
Discharging a firearm (including a bow and arrow) is prohibited in or within 150 yards of a developed recreation site, a residence, or any place where people are likely to be. Shooting across roads or bodies of water is also prohibited.
Target shooting is permitted in the general forest area (except in the Charles C. Deam Wilderness) as long as other persons in the area are not placed at risk and there is no damage to resources such as using a tree as a target.
Cited from http://www.fs.fed.us/r9/hoosier/recreation/rules_and_regulations.htm
Thanks for responding and I'm not trying to challenge you I just want to understand...here's one of the regs that showed on your list under actual regulations. I put in red the questionable areas:
ยง261.8 Fish and wildlife.
The following are prohibited to the extent Federal or State law s violated:
(a) Hunting, trapping, fishing, catching, molesting, killing or having in
possession any kind of wild animal, bird, or fish, or taking the eggs of
any such bird.
(b)
Possessing a firearm or other implement designed to discharge a
missile capable of destroying animal life.(c)
Possessing equipment which could be used for hunting, fishing, or
trapping.(d)Possessing a dog not on a leash or otherwise confined.
(e) Curtail the free movement of any animal or plant life into or out of a
cave, except as authorized to protect a cave resource.