If you're on a daytime layover, one thing you can do is hire a driver from Hunter's Support. All your baggage, including rifle, will be with you in the vehicle.
Twice I've had Gavin S. from Hunter's Support, He's a retired dentist and drives a VW van with a 5 cylinder Audi motor in it. Plenty of room for the luggage and 2-3 passengers. Gavin is very pleasant and will keep you safe and show you some sights.
If you do this be sure to go to Safari Outdoors. Great hunting, firearms and fishing store.