Blythes in Griffith or Valpo. Westforth's also.
don't forget about Bass and Bucks in Wabash IN. 750 yd range!!!!!
Have iPhone? Search Where to Shoot in Apps Store... Was Freebie and come back with even most of the obscure places...
Near Indy for "public range" would have to be IndyTradingPost... Otherwise I'd highly recommend finding a "private" club if you plan to shot more than 2-3 times a year as you'll deal with far less and far more friendly people at the range.
I've wore out my fingers googling for shooting ranges near Schererville, IN. I just moved here from Missouri and I need to find a good outdoor rifle range that has at least a 100 yard line. 200+ would be even better. please help!