The best way, and is fairly cheap is to bed your rifles... I used steel epoxy on top of the aluminum bedding bedding block and went from ~1MOA down to just over .25MOA, as long as I do my part. The stock I have in my rifle already has a floated barrel, so I didn't need to do that. But floating your barrel and doing a bedding job on my rifle worked wonders. I also took the time to bed my one piece scope rail, which also made a difference. Right now I am shooting surplus DAG 7.62x51 and getting those numbers, I cant imagine what I could get if I was making up my own loads for my rifle...
I would look on youtube for bedding videos... I did mine myself and spent less than $10...
Sent from my sniper hide...