I have not shot game with the 250 Berger yet in my 338 Sherman, but so far, they are the most accurate bullet I have tested "hands down"! I am running them at 2800 and change and have shot 1/4 moa at 400 yards. My best powders are H100V, RL17, and N550. I have not jumped them very far, so can't speak to that. My little Sherman case is so full of powder that there is not much room left to jump! I plan on using it for a spring bear hunt in Id., so with a little luck, I hope to have some data that is useful.........Rich