If this is true... Then you should save up and get a Accuracy International AX with at least a Nightforce scope. But that will blow your budget out the window. On the positive side, you wont ever (likely) have gear envy (or an excuse for misses).
You should narrow it down to (1) Minute of bad guy at 500y (2) Minute of gnat's ass at 800+. This will help you between a AR10/LR308 or a bolt rifle.
Go Mil/Mil with FFP for sure, and budget $1000-$2000 just like the other thread lead you to believe.
Barrel length will also depend on how far you plan on shooting regularly. If you decide on a .243 or .260 caliber, then the extra barrel length helps.
Dont be discouraged though, you can shoot precision with less money. My first setup was a Savage 10 FCP with a Leupold 6.5-20. But... the bug took hold and I upgraded to a .260 R700 AICS & FFP Mil/Mil scope (well over $3k now). You should really decide what the rifle needs to do and if you really are a "buy once, cry once" kinda guy.
Good luck!![]()