Browning BT-99 Owners Manual - Page 17

The adjustable comb features an adjustment range of 1⁄4" for cast on and cast off adjustment in 1⁄16" increments. Cast on and cast off angle adjustments of a maximum of 1⁄8" are also possible. To adjust cast on and cast off perform the following procedure: BEFORE PERFORMING ANY ADJUSTMENTS, ALWAYS MAKE CERTAIN THERE IS NO SHELL IN THE CHAMBER. 1 STANDARD MODEL: Loosen the comb by inserting a 7⁄64" Allen wrench through the hole found on the upper left of the recoil pad and into the Allen screw located within the recoil pad (Figure 11). Turn wrench counterclockwise three full turns to loosen Allen screw. This will sufficiently loosen the Adjustable Comb, allowing adjustments to be easily made. The cheek piece FIGURE 11 comes set from the factory with cast in the center position. GRACOIL MODEL: Remove the butt plate by inserting a 3⁄32" Allen wrench into the single hole on the right side of the butt plate and turn the set screw counterclockwise two turns to loosen the screw (Figure 12). Removing the butt plate gives access to the the hole found on the upper left of the stock plate. (Figure 13). Loosen the comb by inserting a 7⁄64" Allen wrench through the hole found on the upper left of the stock plate and into the Allen screw located within the stock plate (Figure 14). Turn wrench counterclockwise three full turns to loosen Allen screw. This will sufficiently loosen the Adjustable Comb, allowing adjustments to be easily made. The cheek piece comes set from the factory with cast in the center position. Standard Model FIGURE 12 Insert Allen wrench here GraCoil Equipped Model 16