You and me both. Actually this was brought up in session and passed the house. it is now in the Senate. Looks like it will become the law next year.
http://www.ilga.gov/legislation/BillStatus.asp?DocNum=1163&GAID=11&DocTypeID=HB&SessionID=84&GA=97
The link you provided states black powder cartridges not pistol cartridges. I guess I could break out the old 45-70 sharps.