When I made my first trip over to RSA in Sept. '09, I took a rifle, a .308 Encore and a .480 SRH. Scopes were mounted to the rifle and Encore but I simply had a scope for the SRH stuck in the case (and I actually never heard that a scope was needed for the revolver). I had no problems getting through SAP with the guns. I'd definitely recommend using a service that will handle getting your permits and will meet you when you arrive plus they'll take you to the front of the line to check the guns. I bet I didn't spend 5 minutes w/ SAP before we were leaving the airport.
Good to hear that you're going to try a Cape Buffalo with your .480. That's my plan in a few years.
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Republicans believe everyday is the Fourth of July, but the democrats believe every day is April 15th. -- Ronald Reagan