I bought a new M1A one year ago. What Leo said is right. I also use a middle of the road load loads of RL-15 for the 150 grain bullets. One inch groups at 100 yards are common. Also this works well on whitetail. I have used 150 grain Corelokt, Bronze point, and partitions, all work great. The only problem I have ever had was Federal brass not extracting, just dont use federal brass anymore.
Cheese