Yeah, I had the same problem with Barnes in 375HH. 338WM.300WM, I couldn't get tight groups. I know guys that do and like them. For some reason they just don't like my guns. I have worked up range loads w/ different powders, primers etc.. but no luck.Id also suggest an accubond. I dislike the all copper bullets to me it seems they have a narrow window where they behave properly.