Man... there are so many options, it's not even funny. You can get there with a million different combinations. Best I can do is offer some guidance:
- Go custom. Factory rifles are better than ever, but you'll still end up replacing stuff. Do it right from the start. Look at Rem 700 footprint actions to get the most options for the rest of the pieces (barrel, stock, trigger, etc).
- The barrel is the most important piece for accuracy / precision. Get a good cut-rifled barrel from Bartlein, Benchmark, Krieger, Hawk Hill, etc.
- Good glass is also important. Don't cheap out here. You need to be able to see the target well, and it needs to dial correctly and consistently. You're gonna spend at least $1,000. Closer to 2,000 is better. Nightforce, Vortex (Razor), Leupold (high-end), Ziess, etc.
- Caliber: This topic alone can be debated endlessly, but I would recommend something in the Creedmoor or PRC family. Hornady makes really good factory ammo, but even if you reload, it's still the easy button. I wouldn't overlook something in 6mm, like the 6 Creed. It'll get to 1,000 and then some, and lower recoil will help you keep shooting more.