Of all the calibers to reload (or have reloaded), the Weatherby one's would be it. They are expensive as factory ammo, and the ammo quality is not that great. Brass is expensive for it, but once you have it, you can reload them multiple times.
Long story boring- I had a customer with a custom 300 Wby mag and he bought 2 different factory Wby ammo offerings to test in his new rifle. They would shoot 2"-4" at 100 yards, and all over the place. He had the gunsmith look over the rifle again, and the smith assured him the was fine. He brought me the rifle for load development. He wanted me to break down the factory ammo by pulling the factory bullets out and reuse the brass. When pulling the bullets, I weighed each powder charge from each round. I weighed the powder charge of about 20 rounds. I had a 1.9 grain swing from high to low. 1.9 grains!!!! What does this mean? I load my single stage ammo to within .02 grains, or to the exact kernel of powder. When I work up test loads, I increase the powder charge in .3 to .4 grains, and have about 5 groups to test (about a 1.5 grain spread in 5 groups) I am looking for the accuracy node within a certain powder charge range. Going up in .3 grain increments, it would take over 6 test load groups with a 1.9 grain difference. I can easily pass 2 accuracy nodes in 6+ groups of test loads with this large of a spread. This is why the factory ammo was all over the place. And, this ammo was about $70+ a box!!!