I can match that with my model 70 stainless classic, circa 2001-2002 vintage, 300RUM, 4.5-14x Leupold, 200gr Partition on top of 94gr of Retumbo, 100yards. Now my 7mm mag thats identical except with the BOSS, I'm still working a load for it, but without playing with the BOSS, I'm confident it will get 1/2" groups. Both guns were recently put in winchester wood stocks, no bedding performed. The 300RUM has only had the trigger tweaked from its 8lb trigger to a more sedate 3.5lbs.