I have used the 130 grain BST in my Browning 270 with a BOSS and the bullets are VERY accurate. That being said, I find that if I hit part of the shoulder(shooter error) with these that they completely break up. If the shot is placed in the boiler room then they are great working bullets. I use 180 grain cheap old core loks in my 30.06 and get better overall results with pass throughs and large holes.