It sounds like HuntandShoot, has had good luck with Sierra's for elk as have many others. While many people count on Remington Cor-Lock's to fill their freezers on game as large as moose. For me I have had terrible luck with both bullets. I have a hard time killing a deer with the Remington offering and the Sierra's come apart before much penetration from my experiences. It is always interesting hearing others experiences. There sure is a lot of dead game from those two bullets. Guess I am doing something wrong.