My 8mm mauser likes Hornday 150 gr with 50. gr of IMR 4064 and REM 9 1/2 primer . I get 2 " groups at 100 yds . My rifle was a used K98 with a ok barrel ,Me and iron sights are the limiting factor it probly would shoot better if i could see . Still I have shot 2 deer with this load/gun.