Im getting everything ready to have a rifle built and have it narrowed down to the 7wsm & 7stw. I will be using this rifle for fun shooting and deer/elk (mostly deer)hunting at ranges out to 600-700 yards and I will be shooting a 160 AB. Will the stw be worth the extra velocity over the wsm at the cost of barrel life, more recoil and use of more powder? What kind of barrel life could I get with the stw?