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Frequently Asked Questions
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Q. I have a Browning rifle with the BOSS. What is the "Sweet Spot" setting for my firearm?
A. The following are suggested "Sweet Spot" settings for Browning rifles that have the optional BOSS (Ballistic Optimizing Shooting System) attachment:
Suggested "Sweet Spots"
Caliber Bullet Weight Ammo Manufacturer A-Bolt
Average
Sweet Spot*
BAR
Average
Sweet Spot
375 H&H 270   2.3  
375 H&H 300   4.5  
338 Win. Mag. 250 Federal 6.75 4.25
338 Win. Mag. 230 Winchester 5.25  
338 Win. Mag. 225 Federal 5.25 0.5
338 Win. Mag. 210 Federal 4 1
338 Win. Mag. 200 Federal 3.25 3.25
325 WSM 220 Winchester 1.0  
325 WSM 200 Winchester 10.0  
325 WSM 180 Winchester 9.8  
300 Win. Mag. 220 Winchester   6
300 Win. Mag. 200 Federal 3-3.5 3
300 Win. Mag. 190 Winchester   4
300 Win. Mag. 180 Winchester   4
300 Win. Mag.
(for A-Bolt II M1000 only)
180 Winchester 9  
300 Win. Mag. 180 Federal 8.5 3
300 Win. Mag. 178 Remington 1  
300 Win. Mag. 165 Hornady 1 1
300 Win. Mag.
(for A-Bolt II M1000 only)
165 Hornady 3  
300 Win. Mag. 150 Winchester 9 9
300 Win. Mag.
(for A-Bolt II M1000 only)
150 Federal 1.5  
300 Win. Mag. 140     1
300 Win. Mag.   Fail Safe (Black Talon)   4
30-06 Springfield 220 Winchester 10-10.5 7
30-06 Springfield 180 Hornady 10 5.25
30-06 Springfield 180 Federal 5 5
30-06 Springfield 175 Federal 7.2  
30-06 Springfield 165 Federal   2
30-06 Springfield 165 Winchester   2.5
30-06 Springfield 165 Hornady 3 3
30-06 Springfield 150 Hornady 3 2.25
30-06 Springfield 150 Federal 1.5 2
300 WSM 150gr. BST Winchester 1 0.5
300 WSM 180gr. PP Winchester 1 1
300 WSM 180gr. FS Winchester 3 10
308 Win. 200   3.25  
308 Win. 180 Federal 5.25 5
308 Win. 168 Hornady 4 3.5
308 Win.
(for A-Bolt II Varmint only)
168 Hornady 4-4.25  
308 Win. 150 Federal 2.5 2.5
308 Win.
(for A-Bolt II Varmint only
150 Federal 2.5  
280 Rem. 165 Remington 6  
280 Rem. 150 Federal 2.5  
280 Rem. 140 Federal 4  
7mm Rem. Mag. 180 Federal   5
7mm Rem. Mag. 175   8 5
7mm Rem. Mag. 168 Hornady   3
7mm Rem. Mag. 165 Federal 6-6.5 6
7mm Rem. Mag. 162 Hornady 5.75 5.75
7mm Rem. Mag. 160 Federal 5.75 3.5
7mm Rem. Mag. 160 Nos. Part 4 3.5
7mm Rem. Mag. 150 Federal 2-3 2
7mm Rem. Mag. 154 Hornady 1.3 3.5
7mm Rem. Mag. 140   2.5 1.5
7mm Rem. Mag. 139 Hornady 2.5 2.5
7mm Rem. Mag. 120 Hornady 1 1
7mm WSM 140gr. BST Winchester 1.25 6.5
7mm WSM 150gr. PP Winchester 4 0.5
7mm WSM 160gr. FS Winchester .5 0.0
7mm-08 Rem. 140   2.0  
7mm-08 Rem. 120   1.0  
7mm-08 Rem. 130   1.8  
270 Win. 150 Federal 6 4
270 Win. 140 Remington 3-3.5 3
270 Win. 130 Federal 2.5 2
270 Win. 100 Remington 1 0
270 WSM 130gr. BST Winchester 1.25 2
270 WSM 140gr. FS Winchester 2 7
270 WSM 150gr. PP Winchester .3 8
260 Rem. 140   .5  
260 Rem. 120   2  
25 WSSM 85gr. BST Winchester 1  
25 WSSM 115gr. BST Winchester 1  
25 WSSM 120gr. PEP Winchester 0  
25-06 Rem. 122   6  
25-06 Rem. 117 Federal 6  
25-06 Rem. 100 Hornady 3.5  
25-06 Rem. 90 Winchester 2.25  
25-06 Rem. 85 B Tip. 2.6  

243 WSSM

55 gr. BST Winchester .5  
243 WSSM 95 gr. BST Winchester 1.5  
243 WSSM 100 gr. PP Winchester 6.3  
243 Win. 100 Winchester 5 2.5
243 Win. 80 Federal 3 2.25
243 Win. 85      
223 WSSM 55 Gr. BST Winchester 8  
223 WSSM 55 Gr. PSP Winchester 10  
223 WSSM 64 Gr. PP Winchester 9.5  
.223 Rem. 55 Federal 7  
223 Rem. 53 Federal 6.5  
223 Rem.
(for A-Bolt II Varmint only)
40 Winchester 4  
223 Rem. 40 Winchester 4  
22-250 Rem. 55   5.5  
22-250 Rem. 52 Winchester 4  
22-250 Rem.
(for A-Bolt II Varmint only)
52 Winchester 5  
22-250 Rem.
(for A-Bolt II Varmint only)
40 Federal 4  
22-250 Rem. 40 Federal 2.5  

More information on the BOSS can be found here.
A video demonstrating the BOSS can be found here.

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