Re: WWB ammo from "Wally world," I also experienced an unexplained lack of consistency on paper from my Bushmaster. At first I thought I was getting a real bargain when I was able to get these rounds for such a low price ($4.50/20 rd box) last year, but when I finally got around to firing them, instead of my normal .4" to 1.0" groups, I was getting more of a "pattern," which varied between approx. 4" - 7"! After inspecting my weapon (scope screws, chamber, etc.), I switched back to my handloads and some other factory loads I had brought, and voila!, a return to accuracy. Well, almost. I did notice a small drop-off in group size, which remained unexplained until after I had thoroughly cleaned my rifle and returned to the range some weeks later. My handloads and the Black Hills stuff proceeded to restore my faith in Bushmaster quality. All I can figure is that the WWB ammo uses a powder/primer combo which is especially dirty (?).