Just to be clear, I think it is important to define a few terms because this blog uses these terms to describe what the shims will do to the buttstock.
- Comb - the upper edge of the buttstock
- Heel - the upper edge of the recoil pad
- Drop - at the comb is the place on the comb where your cheek rests when taking aim. If the drop is correct, your eye will naturally fall in line with the sight.
- Cast - is the offset of the buttstock from the center line of the rifle. Some right-handed shooters like the stock to angle away (cast off) from their face, making the line of sight more directly in line with the barrel. Angling the stock to the left for left-handed shooters is "cast on".
- Shim 1 - raises the comb ~1/16" and the heel ~1/8"
- Shim 2 - is neutral and comes already installed on the rifle
- Shim 3 - lowers the comb ~1/16" and the heel ~1/8"
- Shim 1R1L - raises the comb ~1/16" and the cast on or off by ~1/8" depending on the shim letter facing direction (or which side the thicker side of the shim is placed)
- Shim 2R2L - keeps the comb at the neutral position (out of the box) and the cast on or off by ~1/8"
- Shim 3R3L - lowers the comb ~1/16" and the cast on or off by ~1/8"
You can see all of my posts on my FNAR rifle by going to my Summary Page. Also, don't forget you can click on a photo and it will give you a high definition image so you can see more details.