Donna, We do indeed have a Revolver class. Further, the .45 LC will work just fine. Depending on barrel length, the revolver could qualify in 3 events: Field Pistol Production, Big Bore Revolver and Big Bore Standing.
Suggest you find a match & give us a try. If you e-mail me your snail mail address, I will gladly send you a copy of our most recent issue of the IHMSA News. IHMSAeditor@IHMSA.org
Steve Ware