Hello all, I got the double in hand today. First thing I did was to look down the barrels .... there is rifling ... its not a shotgun.

The chambers and the rifling were MINT. But when I inserted a 500 bpe cartridge into the chambers, it was way too loose. The chambers were bigger. Turns out this is NOT a 500 bpe. after all, its the larger 577-500 No. 2 bpe. Take a look at the difference between the two cartridges. I have loaded some ammo and a field test will follow. .... Let me know what you think?

http://www.buckstix.com/buckpics/500vs577-000.jpg