This is what I use for everything
.243 - 95 NBT killed antelope, deer and elk with it. works great been my go to for decades
2 years ago I got these to try
.308 - 168 VLD killed 3 antelope, 5 deer no elk yet
280AI - 150 NBT 1 bull elk, 2 bison
as others have said, there is little out there that won't kill stuff. I too like to see what others use and why.
I use the above because they can be found on sale at times. so I bite the bullet (pun intended) and I buy a bunch at once. they all shoot great out of their chosen rifles.
I've thought about dabbling with other bullets and loads, but I don't want to retart that process again. you're mileage may vary