I have both. I load for the M1 and have tons of ammo for the SKS. Last year I loaded and shot over 1200 rounds of 30-06. I probably put 50 rounds down the tube of the SKS. And for some reason my SKS is quite accurate. Accuracy not being one of the natural traits of the SKS platform. But I almost always end up shooting the Garand. For one, I don't know of a sanctioned match that I can shoot the SKS in.
My Yugo was made in the 70's and probably never issued. My Garand is a 1953 HRA and never fought. But there is just something about the Garand.