Home Forums Hunting & Shooting Hunting Rifles Winchester Model 70 270 Win BOSS sweet spot list?

I have a Model 70 chambered in 270 equipped with the BOSS that I purchased lightly used if used at all...
Of course it came without the box, manuals and the wrench.
Winchester/Browning has provided me with a new wrench, manuals and a sweet spot list. The sweet spot list they provided to me however; is for the Browning ABolt and BAR...
I'm curious if anyone has the actual Winchester Model 70 BOSS sweet spot list as I assume the barrel contours on each rifle is different and thus the harmonics that the BOSS is attempting to change are different.
Thanks to all for any help you can provide!

go to the Winchester guns website. The BOSS sweet spot list is there.

Winchester's website has the instruction manual but, doesn't have the sweet spot list... I've contacted Winchester/ Browning and was supplied with the sweet spot list for the Browning A-bolt and BAR both with very different numbers.
I was hoping someone out there might have a Model 70 with the list made up for the Winchester as I would think the barrel contour as proven by the Brownings would be different. Just looking for the starting points...If all else fails I'll just use the A-Bolt #s and work from there...

I used to have the complete list...I cannot find it.

I searched last night but no luck.

Sorry.

Tom thanks! If you do find it I would certainly appreciate it...

Here is the info you wanted but first you must calibrate your BOSS to zero. Line up the Zero on the lock nut with the zero hash mark on the barrel.

For a .270 here are the numbers for Sweet Spots:
150 grain Federal Sweet Spot = 6
140 grain Remington Sweet Spot = 3.5
130 grain Federal Sweet Spot = 2.5
100 grain Remington Sweet Spot = 3.5

To set a sweet spot of 3.5 - fully rotate the lock nut (3 full turns) to the 3 hash mark.
Next rotate the micrometer adjustment ring to 5.

Lock down your adjustments by turning the tip end (with holes) down to lock the micrometer so it can no longer rotate.

Check you accuracy at the range. With slight variations in the micrometer adjustment (the second adjustment) you can tighten your grouping even better.

I have meant to thank you guys for the info...
The Winchester website info is just what I was looking for!

Winchester Model 70 Boss Sweet Spot...

BOSS Sweet Spot Settings
Cartridge Bullet Weight Ammo Manufacture Model 70 Sweet Spot*

338 Win. Mag. 250 Federal 6.6
338 Win. Mag. 225 Federal 5.5
338 Win. Mag. 200 Federal 3.5

300 Win. Mag. 220 Winchester 3.6
300 Win. Mag. 200 Federal 2.8
300 Win. Mag. 180 Winchester 0.2

30-06 Spfld. 220 Winchester 9.6
30-06 Spfld. 165 Hornady 2.0
30-06 Spfld. 150 Federal 1.8

7mm Rem. Mag. 165 Federal 6.4
7mm Rem. Mag. 150 Federal 2.2

308 Win. 180 Federal 5.5
308 Win. 150 Federal 3.1

270 Win. 150 Federal 2.5
270 Win. 130 Federal 1.1

25-06 Rem. 117 Federal 6.3
25-06 Rem. 90 Winchester 3.1
25-06 Rem. 85 B. Tip 6.3

243 Win. 100 Winchester 5.2
243 Win. 85 3.1

22-250 Rem. 55 4.0
22-250 Rem. 40 Federal 2.5

*Average "sweet spots" represent the starting point in achieving top accuracy from your BOSS equipped Model 70.