Kebco:

Thank you for your offer on the .500 I will consider it; however I do prefer a .470, since I already own a 505 Gibbs even when its not a double.

I will also look at the custom made that you recommend.

I feel everyones opinions very neutral over both Guns if I have this right.

a) They are both Production Guns and by no means jewels.
b) Markel since to have a bit more popularity.
c) Chapuis it's a nicer gun.

I will tray to research the weight on the Chapuis since the weight on the Merkel shall be listed in the Web Specifications.

Does anyone knows which ammo will regulate the best with this doubles?

Cheers.