As you are well aware I am quite certain.....the ole Garand won't take a constant pounding (with some powders) due to the way the Op Rod responds so loads have to be kept to a minimum concerning reloads and bullet weights used.
The 49 gr. load is listed as a max load....but I can't recall what the velocity was given at right now. I always start at the low side and work up and that's what I did with this load. No pressure signs on the brass and easy bolt lift; my main concern was to just get this brass FF so I could go back with H4350 and Berger 185 VLDs.
It shoots the 168 mighty well however!