We have corrosponded on AR a few times. My name there is 'jens poulsen'.

Thanks for sharing all the pictures of your .405cal double. A danish member here named 'Leo' owns a nice .405cal double made by a Hamborg gunmaker. Using Hornady factory ammo we have measured the velocity to 730 m/sec which is a bit stiff but regulates well. The .405win is a pigbuster and everythingelsebuster..lol.