I have owned a 25-06 A bolt II synthetic stalker and an A bolt II medallion in 300 Win Mag. Both had the BOSS system which makes them even more evil. They both were so accurate I felt like I was cheating. It made me a lazy hand loader. I pretty much picked a load that was the most efficient with the highest velocity and tuned the BOSS until it put five shots into one hole @ 100 yards. So, I have nothing bad to say about them. I don't know why I sold them but I did. I will eventually inherit my fathers A bolt II synthetic stalker in .280 Rem which he has had since they first came out with the BOSS system. And that won't bother me a bit.
