Adjustinq Cast and Drop at Comb

Six shims have been included with your composite stocked shotgun (Figure 17). The shims fit between the buttstock and receiver, allowing customized adjustments to the comb and heel. Each shim is labeled/stamped for a specific amount of adjustment. The neutral shim, No. 2, is already installed on your shotgun.

Drop at comb is defined as the place on the comb that your cheek rests when taking aim. If drop at comb is correct,your eye falls in line with the sight bead. Shims marked 1, 2 and 3 do not give any cast on or off. The stock remains straight. They only adjust drop at comb.

These shims with their respective stamps are further clarified here:

Shim 1 raises the comb approximately Vi6", and the heel approximately Va".

Shim 2 is neutral. This shim is already installed on your shotgun.

Shim 3 lowers the comb approximately Vie", and the heel approximately Va".

Cast is the offset of the buttstock from the longitudinal center line of the firearm. Some right-handed shooters like the stock to angle away (cast off) from their face, making their line of sight more directly in line with the rib. Angling the stock to the left for left-handed shooters is "cast on." Shims marked 1R1L, 2R2L, and 3R3L, will all adjust drop at comb the same amount as shims 1, 2 and 3, and will also adjust the cast right or left approximately V»". You will notice that the two opposing edges of these spacers are different in thickness. These shims with their respective stamps are further clarified here:

Shim 1R1L adjusts the comb in the increment given above, (shim 1) and will adjust the cast on or cast off approximately V»". For right-handed shooters, install this shim between the receiver and the stock with the R facing the end of the buttstock, so its thicker side is on the left side. This casts the stock slightly to the right, away from the face of a right handed shooter. If you turn the shim around so the L is facing the end of the buttstock, and it will cast the stock to the left.

Winchester Sx3 Cast Adjustment

FIGURE 18

Use a socket to remove the nut that holds the buttstock in place.

FIGURE 18

Use a socket to remove the nut that holds the buttstock in place.

Shim 2R2L adds the same amount of cast to the stock as shim 1RL and the same amount of drop to the comb as shim No. 2.

Shim 3R3L adds the same amount of cast to the stock as 2RL and 3RL, and lowers the comb approximately Vie" and the heel approximately Vs".

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  • bilcuzal
    Does the winchester sx3 have cast, and drop adjustments?
    11 months ago

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