User Guide

It is recommended you set the BOSS® Sweet Spot setting before sighting

in your rifle for windage and elevation. The BOSS® was tested in full

turn,

⁄2 and

⁄4 turn increments. Tighter groups may be achieved with

the BOSS® tested in other positions. On the Sweet Spot chart, Sweet

Spots are listed by both ammunition and rifle model. Settings not listed,

either do not apply or are for ammunition not yet tested.

PRELIMINARY ADJUSTMENTS

Before setting your Sweet Spot, it is important that your BOSS® be

calibrated with the barrel. This will ensure that your rifle is consistent

with those tested by Browning research and development when

BOSS® Sweet Spots were initially determined.

To find out if your BOSS® needs to be recalibrated, loosen the micro-

adjustable lock nut and turn it until it bottoms out on the threads of

the BOSS® – or will not loosen any further. If your BOSS® is

calibrated, the “0” on the micrometer adjustment ring will line up

with the longitudinal hatch mark on the barrel (Figure 2). If the “0” is

not aligned with the longitudinal hatch mark, you will need to

calibrate your BOSS®. Move the micrometer adjustment ring on the

bottom of the micro-adjustable lock nut so the “0” is aligned with the

longitudinal hatch mark. To adjust the micrometer adjustment ring,

insert your fingernail or a small pointed object in the split of the ring

and rotate the ring (Figure 3).

FIGURE 2 FIGURE 2A

Calibrate the BOSS

so ”0“ lines up with the

hatch mark on the barrel.

The micro-adjustable lock nut must be bottomed out.

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