Yes, you're right. It is the law. I'm just stating that I don't think it's right (in a philosophical sense).
...and there's nothing wrong with trying to get a law changed.
As to the rifle thing thing on public land, I think letting the new law be in place for a at least a season before agitating for changes may be a more wise approach. Methinks limiting it to private land was a compromise necessary to get it out of committee and (or get the votes) and when it is clear the world didn't come to an end during the 2016 dear season, further reforms may be in order.
...but As to who owns the wildlife, Ind. Code 14-22-1-1 and 6-1.