I'm just getting started with my Garand,I was reading a thread here on loading for the Garand.It gave a link to a Mar 1984 article in American Rifleman by John R Clarke.
He discusses "primer up" vs "primer down" powder positioning,and suggests it would make 100 fps difference in velocity with some loads.
He also says,due to recoil and cycling,rounds 2 through 8 will have the powder in the "primer up" condition.
Could it be if a guy slings up and gets into position muzzle up,he has a "primer down" powder condition on round one,and a "primer up" on 2 through 8?
Here is the link:
(fixed dead link)