Bull,
don't know if you are still following this thread, but here's an answer from someone who *doesn't* have any direct experience with that cartridge. The Krag AI case has just about exactly the same capacity as a .257 Roberts AI, or any improved cart. on the ?X57mm Mauser case.
So, with that bit of knowledge, you can look in the reloading manuals and see what you might expect. Taking the .244/6mm Rem cart. as a base, you could add 7% to the powder capacity and maybe half that figure to velocities sand you'd have a good appraisal of its performance. Going up a bit in caliber, the .257 RI has a section of its own in the Nosler manual, IIRC, and that information would be useful if correctly interpreted.
In short, the performance of that cartridge, with proper loads and bullets, would so for all the game you mentioned. However, since I don't think personally that 6mm is a large enough bullet size for deer, I'll add that you have to be a rifleman to use it humanely, and if you are *really* a rifleman, why wouldn't you be using, say a .38-55 for deer? :wink:
I've long thought that the Krag improved case makes the most beautiful cartridges ever designed. Look at the picture of the .25KAI in COTW if you haven't already. The 6mm KAI would be nearly as pretty.
I've been contemplating a deer/antelope in .25 KAI. on my loose Ruger #3 action for a couple of years (.25 is my personal "smallest humane" caliber for deer-sized game) and would really like to have a rifle in that cartridge. However, I think that I will make it either 8mm KI, or .38 KI or .38.56.
Best of luck if you've gotten this rig.
Cheers/buffler
