Finally got to test ammo. Results: used IMR 4350, H 4350 powders 40.0 grs., Hornady 220 gr. RN Interlock .308(#3090) bullets, Remington 9 1/2 primers, with 3.000 c.o.a.l., and case trim length 2.304. Both powders produced nearly identical   1 and a 1/4"x 1/2" groups at 100 yards (5mph quartering wind) Both groups were spread right to left not up and down, indicating shooter error, not ammo spread. The H 4350 group had 3 shots grouped 3/8" x 3/8", the IMR 4350 had 3 shots touching spaced  3/16". It appears that both powders will give nearly equal results with the Krag, much different than my 6.5x55 Swedish Mauser, which does not like IMR 4350. I could not post pictures of my groups, tried to download cell phone pic from computer, and tried to scan, download groups, but got pics too large error when I attached the to thread.