I don't know what you consider to be a "lot" or to be misinformation, but pedantry aside, the modern .308 is ballistically equivalent to old 30-06 performance from a Garand. This is because it was designed to be. The M14 and the T65 program were not intended to increase muzzle energy or recoil in any way. Rather, they existed to take the proven performance levels of the Garand and its ammunition and package them in a box-mag, full-auto capable format.
It's worth recalling that the CMP will offer you an M1 chambered in .308 Winchester (note: not 7.62x51, but full pressure civilian .308) but also cautions Garand buyers against using modern full pressure 30-06 ammo or any bullet weights over the 174gr of the original M1 ball.
The original Garand is a .308 class of performance, NOT modern full power 30-06.