Tried my 7mm08 a bolt out last weekend on 139grn Hornadys. I've been using Sierra and not had brilliant results. Not too different to what you see here really. There's hardly any difference in the group size no matter what the charge, apart from 44.5 and 47(which was rushed). This was off a bipod and rear rest.
1.5" at best I reckon. Makes me think about re bedding. Or should I throw it in the bin and buy Jingzys rifle?