Does any member have Data regarding Winchester Model 70 300 win mag reloading and Boss settings

I don't have any, but I have a Browning A-Bolt with Boss in 300 win mag & would be interested in the same data for the A-Bolt. There are actually a very limited number of factory loads listed in the Boss manual - perhaps you can get "close" by using the listed setting for factory loads with similar bullet weight & velocity, & "fine tune" from there at the range.

I called the 800 number listed for win/browning and they gave me the "suggested" starting number for the bullet wieght I was using over the phone. Good luck.