The 30-378 will have a much shorter barrel life than most other cartridgeseven with a stainless barrel.If you want ballistics close to the 30-378 but with better barrel life,less recoil,and much lower priced ammunition ,consider the 300ultramag.However eventhe 300win mag will be more than adequate on moose at 400 yards.The shooters ability to place his shotswill be the most important factor when shooting game at longer ranges,and with ammunition costing $110 per box,how much practising do you think that most people will do?