Re: How to improve Remington 700 Accuracy
I have two Remington 700 26" varmint model rifles, one in .223 and one in .308. They both average just a tiny bit over .5 MOA. They both have had 5 shot groups in the sub .5 MOA range. They're not custom built rifles either, both have a factory barrel, receiver, bolt assembly, recoil lug, trigger assembly.
The .223 has the factory HS Precision stock, factory trigger pull weight, and a Nikon Buckmasters optic with Leupold bases. The .308 has an AICS stock, factory trigger adjusted to 2.5#, Nightforce scope and rings, Leupold Mark 4 scope base.
If you want to improve your rifle's accuracy, I would have your BC stock bedded by a good gunsmith and then I'd forget everything else, get into reloading your own rounds, devote all your time into finding the best performing load possible then spend your money on components and range time. Worry about upgrading parts on your rifle and having custom work done when you have to re-barrel it. Handloads and practice is a good place for you to start now.
My 2 rifles shoot so well not only because they are bedded in high quality stocks and have dependable optics and bases, BUT because I found the right load for each rifle that turned them both into very, very accurate firearms.