I have a Navy Arms 12 ga like Rebels and I cap both barrels. When I shoot doubles on clays or if I am hunting over a dog on point i will have both barrels capped and full cock. I have never had my gun double but I have shot others that have. Wakes you right up but makes hittig the first bird easy. The second bird is a bit harder. I havn't mastered that yet. It took me a little while to get used to looking down 2 barrels but now I prefer it. It may take a little practice to get used to the gun but you will love it. Good luck.
Berk
Berk