Cleaning the Rifle Bore

To maintain utmost accuracy from vour BOSS

equipped rifle, or any rifle, extensive testing has proven that the rifle bore must be cleaned every 12 to IS rounds.

CAUTION: BEFORE CLEANING YOUR RIFLE MAKE CERTAIN YOUR RIFLE IS FULLY UNLOADED, THE MAGAZINE IS REMOVED. THE SAFETY IS IN THE "ON SAFE" POSITION AND YOUR RIFLE IS POINTED IN A SAFE DIRECTION.

We highly recommend that your rifle be cleaned with the BOSS installed on vour barrel. On the

A-Bolt II. remove the boll and clean from the breech end.

The BAR Mark IL by design, must be cleaned from the muzzle. Use extra care in cleaning to avoid damaging the muzzle crown.

Modern cartridge jackets are made mainly of copper and zinc. These metals glide easier and

3 If absolutely necessary, the BOSS may be removed to facilitate cleaning your rifle.

IN CLEANING THE BAR MARK II WITH THE BOSS REMOVED, THE PLASTIC CAP (CROWN AND ACCURACY PRESERVER), PROVIDED WITH THE BAR MARK II, SHOULD ALWA YS BE USED TO PRESERVE THE MUZZLE'S CROWN.

NOTE: WHEN CLEANING THE BAR MARK II ALWAYS MAKE SURE THE CAP USED MATCHES THE CALIBER OF THE RIFLE BEING CLEANED. THE CALIBER IS MARKED ON THE END OF THE CAP.

Clean the BOSS by unscrewing the body and micro-adjustable locknut from the rifle. With the components disassembled, wipe each component with oil. Browning Oil is excellent for this application. Lightly oil all threads and make sure the exhaust holes are free of obstructions.

REMEMBER TO REMOVE THE PLASTIC CAP WHEN REASSEMBLING THE BOSS ON THE BAR MARK II.

4 Reassemble your BOSS by screwing on the micro-adjustable locknui and ihen the BOSS body. After taking apart the BOSS ii will be necessary reset the *sweet spot/

MAKE CERTAIN ALL CLEANING PATCHES ARE REMOVED FROM THE BARREL AND EXHAUST HOLES IN THE BODY OF THE BOSS BEFORE FIRING YOUR RIFLE.

5 When firing for extreme accuracy, alter cleaning the bore it is recommended two fouling shots be fired before firing for accuracy. Additionally, it is recommended the rifle be allowed to cool every three rounds.

A-Boit II BOSS Parts Listing

Caliber

I.ocknut

Hodv ■

Weight

22-250 Rem. Hunting

X

F

M

¿2-250 Rem. Varmint

I-:

K

V

223 Rem. Hiiulin^

X

F

M

223 Rem. Varmint

E

K

V

213 Win. X F M

25-06 Rem.

A

F

M

270 Win.

A

F

M

7min-i)8 Rem.

X

M

280 Rem.

A

F

M

m Win. Y G X

30-06 Sprg.

7.

G

P

7mm Rem. Mag.

C

G

N

300 Win. Mag.

C

G

R

33B Win. Mag. 0 II T

BAR Mark 11 BOSS Parts Listing

Caliber

l.ockiiut

Body

Weight

243 Win.

B

F

M

270 Win.

B

F

M

308 Win.

C

C

N

30-06 Sprg.

C

G

P

7mm Rem. Mag. W G N

300 Win. Mag.

w

G

R

338 Win. Mag.

D

H

T

When ordering pans, please list the pari name and letter designation, caliber, the model and the serial number.

When ordering pans, please list the pari name and letter designation, caliber, the model and the serial number.

Sweet Spots

Bullet

Ammo

A-Bolt

BAR

Caliber

Wl. Grains

Mfr.

Setting

Setting

7mm Kern Mag

180

Fed

5

7mm fem Mag

168

Hrndv

7mm Rem Mag

165

led

6.5

6

7mm Rem Mag

162

Hrndv

5.75

5.75

7mm Rem Mag

150

Fed

3

2

7mm Rem Mag

139

Hrndy

2.5

2.5

7mm Rem Mag

120

Hrndv

1

1

338 Win Mag

250

led

6.75

4.25

.338 Win Mag

230

Win

5.25

.338 Win Mag

225

I:ed

5.25

0.5

.338 Win Mag

210

Fed

4

1

.33« Win Mag

200

Win

3.25

3-2?

.308 Win

180

Fed

5.25

.308 Win

168

Hrndv Fed

\

.308 Win

150

■) < .. • j

.300 Win Mag

220

Win

6

.300 Win Mag

200

Fed

3.5

./

.300 Win Mas

190

Win

4

.300 Win Mag

180

Win

4

300 Win Mag

180

Fed

8.5

2.5

.300 Win Mag

178

Rem

1

.300 Win Mag

165

Hrndy

1

I

.300 Win Mag

150

Win

l)

9

.30-06 Sprg

220

Win

10

.30-06 Spry

180

Hrndv

5.25

.30-06 Sprg

ISO

Fed

^

s

.30-06 Sprg

175

Fed

7.2

.30-06 Sprg

165

Win

2.5

.30-06 Sprg

165

Hrndy

3

.30-06 Sprg

150

Hrndv

3

2.25

.30-06 Sprg

150

Fed "

1.5

2

•2#0 Rem

165

Rem

6

.280 Rem

150

Fed

)

.280 Rem

140

Fed

/ ^

.270 Win

150

Fed

6

/ 1

.270 Win

140

Rem

3.5

3

.270 Win

130

Fed

2.5

2

.270 Win

100

Rem

3.5

1

.25-06

117

Fed

6

.25-06

110

Hrndv

3.5

.25-06

90

Win

2.25

.243 Win

100

Win

f

2.5

.243 Win

80

Fed

3

2.25

.223 Rem

55

Fed

"T

.223 Rem

53

Fed

.223 Rem Vmi

53

Fed

.223 Rem Vrnt

40

Win

4

.223 Rem

40

Win

2

.22-250 Rem

52

Win

✓ •1

.22-250 Rem Vrnt

52

Win

*

.22-250 Rem Vrnt

40

Fed

4

.22-250 Rem

40

Fed

2.5

Premium gjude ammunition of ¡be same load requires a different sweet spot set-/irthan standard grade ammunition.

Only commercially atallahie hunting ammunition complying to Sporting Am> and Ammunition Manufacturers' Institute (SAAMi) spvcificmoiu uw used throughout testing of the ROUS. It is unknown what a roup sizes may be possible with the HOSS using match grade ammunition.

Premium gjude ammunition of ¡be same load requires a different sweet spot set-/irthan standard grade ammunition.

Only commercially atallahie hunting ammunition complying to Sporting Am> and Ammunition Manufacturers' Institute (SAAMi) spvcificmoiu uw used throughout testing of the ROUS. It is unknown what a roup sizes may be possible with the HOSS using match grade ammunition.

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