I discovered those on Alabama (and Georgia) deer about 30yrs ago. Sierras and Speer's (and later Nosler B.T.'s) are many times more accurate (but not always), but nothing is better for putting meat on the ground. The 150gr is more than adequate for anything in the lower 48. My brother has taken a number of Elk with his .308 and 150gr bullets, and he won't change to anything heavier even after trying some 165's. I however did take 180 CoreLokts in my '06 to Wyoming this past year, simply because my friend/guide requested I bring something that would handle a Grizzly in case we got 'entangled' with one. I saw more moose and grizzlies than I saw "shootable" elk..... Go figure!
I had never shot any Corlokts through my .257Roberts until about 8yrs ago. Didn't realize what I was missing. My wife took her first deer with the Roberts and 100gr Corelokts. She asked what the big deal was about killing deer, it was just bang-flop ????
In my 7mm-08 I haven't found anything better than either the Remington 140 or 150gr Corlokts and 150gr Winchester Power Points. On the two deer I shot with the 140gr Nosler Partitions, I been underwhelmed as the Corlokts penetrated better, meaning I recovered both Noslers, but NEVER a Corlokt. Ditto with the 25cal. The Winchesters are the most accurate bullets in the 7mm08, and are quicker opening than the Noslers.... and half as expensive.
The closest performing bullets to the Corlokts are the Hornady flat-based Interlokts.
I can, and probably will get along for the rest of my hunting career with the Corlokts and Interlokts.... Which ever I can get the cheapest, on sale. But I will still do accuracy testing with the Sierra's, Speer's, and Noslers......... Just to keep Hornady and Remington HONEST.......
My only complaint against the Corelokts is that they're much more expensive than they used to be, even compared against the other bullets. Last time I bought some 200gr Corlokts for the .35, they were more expensive than the Sierra's or Speer's.