I friend of mine did the same type of hunt in New Mexico. But for Mule deer. The outfitter provided 338 lapuas for the two hunters due to the expected long range presentation. Glen for a trophy Mule deer at about 600 yards. The shot was accross a canyon and they could not get any closer. At the shot, the MD turned on the hill side. Glens trigger break was broadside, by the time of the impact the deer had turned, the bullet striking the the deers spine. The bullet chewed up about 20 inchs of the spine entered the back of its head and exited from the deers face. The trophy deer was mess. Similar type of hunt with supplied rifles.