im looking into getting a new rifle for hunting out west, more specifically elk hunting and i was wondering if i could get some recommendations on a rifle that will be accurate at 1000 yards and still carry enough punch to take down an elk. I've looked a bit into the .300 win and wsm, .300 rum, .308, and the 6.5 grendel. What would you say is the best gun for this job? Thank you so much for your time.