Weatherbys can be touchy, with light barrels, free-bore and enough barrel heat to brand cattle.
Try keeping the barrel cold and see what you get. Another is try TSXs. Nothing likes jumping like a TSX.
My own .270 'Bee (Accu-Mark) likes a 130 grain TSX or TTSX or not much else. Given one of those bullets powder doesn't matter much but 7828 is the fastest so I went with that. 73.5 Grains if you are interested. A friend has an older one he inherited from his father that was likewise picky. I directed him toward TSXs and he found his own way to 73 grains of 7828. Killed an elk the other day with it.
Not being able to stay on paper at 200 yards sounds more like a scope or mounting problem than a load/gun problem.
Last edited by Model70Guy; 09/12/14.
