Use the data in the Ken Waters 8x56MS article (June 1995)and using 9.3X57 brass will work as well.
My long time hunting partner used a pristine Model 1908 MS for many years.
He used R15, H4895 and IMR4064 for powders and he was partial to 175 gr. Sierra, 185gr. Remington and 170gr Speer semi-spritzer bullets.
Next time I chat with him I'll see if he still has his load data.
SC
