I have done some testing with the 180 grain deepcurl in my 300 win mag, they shoot the best out of this rifle. better than the partitions, they are very simular in weight retention to the accubond by nosler. I have shot into water jugs and also into wet newspaper. like i said same weight retention as the accubond. I would not hesitate to use them on elk. ps nothing wrong with partitions. i use them for some applications, very well constructed. For the money i would buy the deepcurl you can buy 100 for less than you can for 50 partitions.