I have been loading 308 for a m1a using reloader-15 and 165 hpbt bullets.
You can do a bleep bloob search for Palma match loads and get a pretty good idea of the loads the Palma match shooters are using for target shooting. My dad always gave me a savage 99 in 308 to barrow until I bought my own hunting thunder stick. Love the 308 but for some stupid reason I always choose some new fangled super banger that costs more and harder to find ammo, and more expensive to shoot.