Be sure to buy a revolver nipple wrench since a standard nipple wrench won't fit. Cabela's may not even have one that fits snug so bring the cylinder along for a trial fit.
Some folks grind their own nipple wrench from a size 3/16" socket having a 1/4" drive by using a Dremel and/or file. A 6mm Allen wrench can be used to turn the socket.
Many folks apply breech plug grease or anti-seize to the nipple threads.