Hit a deer in the shoulder with a Ballistic Tipped Style bullet from a .270 WBY, at less than 200 yds, and you will have nothing but bloodshot meat, ruining alsmost half of the good meat on a deer. Shoot the deer in the center of the chest with that bullet and caliber, and you have a very dead deer with a massive blood trail IF he goes anywhere. As far as running up the mountain, you will see no difference in a deer shot in the shoulder or in the engine room. If your aim is to break a leg bone, you are aiming for a very small target anyway, so just aim for the center of the chest and get it done just as fast while saving a lot of meat. Don't know what Weatherby loads in the .270 as far as bullet weight, but I would try the 130 grain if you must use them.