I show you should get peak pressures of about 37,700, 2880 fps at 15 feet from the muzzle, and 39,900 psi and 2945 fps, both measured when the powder is back over the flash hole. The peak pressure and velocity will be lower when the powder is thrown forward, as the Garand tends to do. But test barrel ammunition is always manipulated to put the powder over the flash hole, so those are the numbers I can extrapolate from Hodgdon's data for their test barrel. The SAAMI spec pressure and velocity barrels used by Hodgdon in a universal receiver for testing are minimum chamber spec which will be tighter than your Garand has, in all likelihood, so your pressures and velocities are likely to be lower. It also applies to the lot of powder they developed the load with, and yours could be different in either direction. A chronograph would tell you with more certainty. If you find the powder burns dirty or incompletely (you find unburned grains in the bore) then low pressures are the cause.
If you follow Chris Long's optimum barrel time theory, that Hodgdon pressure barrel with 52.2 grains (about 45,300 psi and 3,080 fps) or with 55.3 grains (about 54,130 psi and 3266 fps at 15 feet from the muzzle) would be on Long's node positions ±2% of charge weight.
The light bullet lowers pressure significantly. If you prefer to run the loads slower you will find a faster powder like 3031 burns better and uses lower charge weights to save some money. I also like VV N135 for better case fill.
Good luck with the tests!