Admittedly I've never used core-lokts but the word of mouth around my campfire is that its not a great bullet. We all know that 65% (guessing) of big game hunters out there pull out thier old rifle once a year and maybe go the range or a hillside the day before opener to squeeze off a few rounds. They don't care if they get a deer or not and when they do its almost always some little forkhorn. These guys don't even know grain they should be using more or less what thier bullet does when it impacts an animal. My guess is that Remington hired some "smart" marketing exects that realized the #1 thing on these guys' mind will be costs and they represent the majority of the market. So they put out a cheap bullet thats OK for deer. Not great, just OK but cheap. My partner has shot a few deer with them while I've been around and although he's never lost one he has had lots of meat damage due to the bullet fragmenting once hitting bone. Based on that I'd say they probably wouldn't be my first choice on elk.