I am looking for a used 32 caber muzzleloador rifle to rabbit hunt with. If you have one, can you tell me how they shoot an or where I mite find a used one . Do they make a new 32 calber rifle?

Check Dixie Gun Works (http://www.dixiegun.com) for new ones in .32 cal. Both flint and percussion available.

Something tells me such a rig would be much fun...

I don't know if this would be what you would want. However it is a new .32 caliber Muzzleloader.
http://www.traditionsfirearms.com/eshop/10Browse.asp?Category=Bargain%20Bin