2-1/2" pitch?

[Dean Romig]

True - pitch is determined by the angle of the butt in relation to the angle of the top of the barrels but pitch is measured on the 90 degree. To determine pitch stand the gun on its butt flat on the floor and slide it toward the wall until the top of the breech is against the wall then measure the distance from the wall to the muzzles.

[Bill Murphy]

Dean's method (against the wall in inches) is the American method and the most convenient. The English method is to measure the angle in degrees, a totally inconvenient method devised to excuse the stockmaker from blame if things don't come out right. The wall method changes a bit as the barrel length changes, but it is still a more convenient method.

[Theodore LeDurt]

Do you measure to the barrels from the wall at the muzzle, or do you measure from the wall to the center of the muzzle?

[Bill Murphy]

The edge of the barrels at the muzzle.