One thing that has been left out of this informative discussion is the "automatic" sight picture (alignment of the sights with the shooter's eye) as the gun is brought up in shooting position. Instead of filing the rear sight I installed a slightly higher (.040") front sight to align the sights with my eye so that I hve the best automatic alignment of the target and my eye. I am not shooting dangerous game, but to be able to close one's eyes and throw the double rifle up to my shoulder repeatedly, and then open my eyes with the target perfectly in my sights is real fun! Thanks.