Federal blue box
We were using 130 g .270 WSM Federal blue box last fall for mule deer.
At short range, one shot kills, pass through both lungs, both deer dropped dead within seconds. Like everyone says.......shot placement is critical.
Sure, there's lots of premium bullets out there, too, and no doubt, they work as well or probably better, particularly when the animal is presenting something less favorable than a broadside stance. Remember that for decades, bullets that were no better (and probably worse) than Federal blue box harvested countless big game.
Good luck
Therion