Sales gimmick...no question. And it obviously did not work for Winchester very well.
You may be right in terms of finding the absolute sweet spot. all I can say is that it was always easy for me to pick a bullet I wanted to use for a particular purpose, and then dial in the BOSS so that the load shot MOA or less, which was/is good enough for a hunting load for me. but again, that's just 2 rifles and maybe I just got lucky.
