I don't want to get pushy here...but I will reiterate, maybe the most important single thing about the accuracy load I quoted above, is the profile of the flat base 160 gr bullets seems to work with the BRNO chamber dimensions. I fooled with a great variety of 139 to 145 bullets, in a number of traditional powders, in a number of seating lengths....and never came even close to 1 moa. And, since I found this to be true in 2 BRNO's, widely separated by year of production, I'd venture that there is a clue there in regards to the 160 fb and BRNO chamber. By the way, I never had any joy with the 154 Hornady either, which is very strange, considering it is fairly close to the Sierra and Speer 160's.
