You bought the Taurus Judge I assume. I'd be very interested in any ballistic tests you do. I read a very nerdy review (good thing) of the gun using a variety of .410 rounds. I can't remember which one came out on top (I'd look for the link, but I'm on a blackberry so I really can't do much browsing).
Anyhow, hope it works for you and stay safe FRiend.
Most people don’t realize it, but the Taurus Judge really shines when you load it with hot .45 Colt loads like the ones you can get from Cor-Bon or Buffalo Bore. They turn your revolver-with-a-glandular-disorder into a pocket .45-70.