Had the same situation, when my father in law passed away. He left me three long guns (a nice Weatherby 30-30, a WWII era Remmington 12 ga. model 11 Navy issue Shotgun , and a Marlin .22 from about 1914).
FFL guys on both ends were looking to get rich, so seeing as my mother in law was going to visit us for Christmas, I purchased a 'hard case', with locks (Cabellas). She put them in the case, locked it, gave them as 'checked' luggage (they wrapped the case in yellow tape, marked 'unloaded firearms'), and when we picked her up at the airport, I had my guns...
I thought that guys take their guns when they fly to a hunting destination, so tried it, and it worked just fine. If a visit to WI is due in the future, give it a try.
Or, if yer coming to InZane, hook me up with the owner, and I'll pick it up and deliver in July
