Originally Posted by BallCoeff.435
If you need particularly accurate 308 ammo, assuming your system can take advantage of it, it will have to be customized to your rifle in addition to consisting of top grade components.
That will mean lots of enjoyable hours and effort working up accurate hand loads - which once you get there, will also be the cheapest way to get accurate ammo.
Military doesn't make custom ammo for each of their sniping rifle. They use very expensive match grade ammo purchased in large quantities...
Besides, they do their purchases as a whole shooting system; i.e. rifle, scope, ammo, ballistic calculation tools, etc...
Civilians often don't have access to some individual components, so they have to go with the route you've perfectly explained.