It is generally accepted that 4895 IS the powder used in M-2 ball ammo. 4064 is considered the SLOWEST you can safely go in a Garand. Your load (46gr) looks a little light as the Hodgdon web site has 47 gr as the minimum load. If it works in your rifle with the brass you are using I would not sweat it, you appear to be in safe territory.
In life, strive to take the high road....It offers a better field of fire.
"Robo is right" Fuzzball