.338 Win. Mag, 250 Nosler Partition puts an Elk to rest like hitting a mouse with a dead blow hammer. I have loved this cartridge for nearly 30 years. We have had a strong partnership. When I do my part it does the rest with an authority that is hard to beat. In a recent trip to Africa a friend of mine took 14 plains species with 15 shots. In short, for me it works.