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The Hornady book has M1 Garand-specific load data.
I've been using 45.0 grains of 4895 under a 150gr bullet.
The Hornady 7th edition does have a Garand section as EC said and it also lists the powders that Big Gun mentioned. Remember,all 30'06 loads are not suitable for the Garand. I use ball powder because it flows better through the powder measure. The Hornady manual lists bullets from 150 to 178 grains. It also lists service rifle data in .223. Hornady Ballistics Tables are available at www.hornady.com/ballistics.