I think a a5 is a Browning auto 5 - right ? If so, Mr. Browning thought it was one of his greatest achievements because it could use BP or nitro. But maybe it's one of the new ones that look somewhat like the old auto-5 and wouldn't digest BP. I reload so BP is just one of the loads I make quite often. The best outing was in the afternoon of a tower shoot where we went afield with our dogs to shoot any birds that had escaped in the morning. I had used smoke all morning and in the afternoon my Wirehair Pointing Griffon had been retrieving all the birds anyone shot and he pointed a bird. I kicked it up, let everyone else shoot, and took it down with some smoke in my hammergun. My friend gave me a big thumbs up. Kind a neat to hear all those other guns go off and have my big boom bring home the bacon.