I have shot the “awful” 308 Winchester for more than 20 years on the hill up north and for all its apparent faults the deer don’t run far.
On copper I went light compared to my 150gn lead load. I have shot SST hornady and Nosler BT quite a lot as I my preference was a deer on the ground to one my dog would need to find.
Everyone’s needs differ.
Now I am shooting 130gn fox and 150gn Nosler BT and don’t need to alter POA.
The fox ammo is spectacularly accurate but it does not come close to the stopping power of the Nosler.
So stalking for the food chain - Fox copper
Stalking for the freezer - Nosler
For clarity these are Red /Sika Deer, the 308 drops fallow and roe regardless.