David has a Westfield 1-10” twist barrel on his 250-3000, so hunting with premium bullets is an option for him. I don’t know that an elk is so tough that it would be unethical to hunt it with a 100gr Partition, for example.
On the right track now.
In a 1-10 barrel the 120 grain partition would probably be a better choice than the 100.
If somebody had a bug up their butt to kill an elk with a 257, the 120 in the 25-06 makes a lot more sense to me.
People can do whatever they want.
JMO