Slope of Wrist

[Nhgrants]

Not sure if this can be answered simply.  I am building a NW style gun but with a .54 rifled barrel rather than a smoothbore.
I am having trouble with the butt stock and wrist layout.  I'm thinking you determine the LOP and the desired drop at the butt.
These two dimensions will be used to determine the edge and top of the butt plate.  The height of the butt plate measured down from the top will locate the toe of the butt.

Should the top surface of the comb need/should be parallel to the line of sight?  Should the butt plate be perpendicular to the line of sight?

Is the slope of the wrist determined by the line from the toe of the butt plate to the trigger area?

   
     

[Mike Brooks]

Refer to originals.

[rich pierce]

No hard and fast rules. Best to pick an original you like as Mike said.

[Elnathan]

The angle of the comb line tends to vary between schools and periods, although one occasionally does find makers that vary comb angle from gun to gun. Very few are parallel to line of sight. You really need to look at the specific type of gun - NW Guns, in this case - and see what angle they used. The way I measure this from pictures is to sight along the top of the comb, or lay a ruler along the top, and see where the line thus formed enters the wrist and where it exits. This is obviously easier with schools that have a fairly straight comb-line.

Buttplates can be perpendicular to the line of sight, but more usually they are angled so that the heel is a bit forward of where it would be if it were perpendicular. This measurement is called the pitch.