So... Using this data: http://www.bearblain.com/Service Rifle Loadings.html which is supposedly from Hornady's M1 Garand specific pages, I have loaded a dummy cartridge on once fired brass, and it looks completely wrong. I have loaded a 168 grn tipped Sierra Match King to 3.240." @Slamfire earlier suggested a maximum COAL of 3.300 for Garands. The projectile is seated so deeply, that I estimate the base of the projectile to be about level with where the case starts to narrow to the neck (shoulder of the case). The cartridge appears to be way too short. The projectile protrudes from the mouth of the case well up past the ogive.