Good tips from everyone. Kensal has it right, stop when you get close and do the rest with a file and emory paper/sandpaper.
I made my own jig for doing recoil pads. I've found out that most of the stocks I have done laying a bevel guage on the top of the stock the angle is 7 deg. and the bottom is -15 deg. So you have to set the bevel on your disc sander at 7 deg. towards the disc and for the bottom you have to drop the table to 15 deg.
I put the pad on the jig upside down so that I can see the line and stay close except for the bottom, I leave more because of the long taper.
Tedious work and no room for error.
