I'm gonna have to wait a while before I can commit but I'm going to try to plan for it. I've been looking at that range on line for a while and it looks really nice!
According to this site: DNR: Roush Lake Shooting Range the hours may vary and there is a $4 charge for adults. I'm assuming we know they will be open that day?
Also, these coordinates: 40.831468,-85.430751 will give you the exact location on google maps.
Yes, they will be open. Their hours vary depending on the time of year... The change will be times when they open and close. They are open everyday but Mondays with the exception of a Holiday Monday, where they are usually open...
Being it is that late in October, I would think all the hunters that need to dial their guns in will already have it done... I wouldn't expect it to be awful busy...