There is a local indoor range called "Uncle Rudy's" where I sometime shoot.
unclerudys.com
It specifically says in response to the question "can I shoot polymer coated ammunition in my gun"
"Unfortunately, no. As of the writing of this FAQ, May 31, 2017, Indiana Code classifies all polymer coated ammunition as ‘Armor Piercing’. Anyone in posession of plastic coated ammunition could be subject to a Level 5 Felony.
The exerpt of the Indiana code is referenced below.
IC 35-47-5-11 “Armor-piercing handgun ammunition”; related offenses Sec. 11. (a) As used in this section, “armor-piercing handgun ammunition” means a cartridge that: (1) can be fired in a handgun; and (2) will, upon firing, expel a projectile that has a metal core and an outer coating of plastic. (b) A person who knowingly or intentionally: (1) manufactures; (2) possesses; (3) transfers possession of; or (4) offers to transfer possession of; armor-piercing handgun ammunition commits a Level 5 felony. (c) This section does not apply to nylon coated ammunition, plastic shot capsules, or ammunition designed to be used in rifles or shotguns. (d) This section does not apply to a law enforcement officer who is acting in the course of the officer’s official duties or to a person who manufactures or imports for sale or sells armor-piercing handgun ammunition to a law enforcement agency. As added by P.L.332-1983, SEC.1. Amended by P.L.327-1987, SEC.2; P.L.158-2013, SEC.596.
There is a house bill HB1095 to repeal this law, but as of the writing of this FAQ, it had not been passed."