Hello, I have been doing some research on differant calibers, and thought that this place is where my questions would be answered. So here we go. I am having a "longrangehunting" rifle built this spring. I had my mind all made up on useing the 340 weatherby caliber. I have read that the 338 remington ultra mag is a much better cartridge. I have also considered a 300 remington ultra mag or the 300 weatherby. I will be shooting factory ammo until I can get set up to reload again. I live and hunt whitetail in the grass plains. I have plans on a elk trip and also a couple of trips to Alaska for various other animals. I need help from you guys. What in your experiance would you do as far as picking a caliber? I love to shoot and want to be happy with my choice.