I wouldn't recommend these loads in an M1A. A lot of 308Win book loads are geared toward that port-pressure requirement.

There are a bunch of us doing R&D with RL17 in the 308, and 7-08 with the heavies in boltguns. My findings are in line with everyone else.

I imagine the book loads are built with the lowest common denominator, and for good reason. Running heavy brass, tight chamber, short throat is always going to cause more pressure with equal charge than light brass, loose chamber, long throat, and moly.