I was going to buy a Remington 700 Stainless R5 in 300 Win Mag for $1100 for Long Range hunting/shooting. But then got to thinking I could probably build one off a Savage action, with custom barrel and stock that will shoot at least as good if not better for the same money. I already built a .270 and .300 Win Mag sporter off Savage actions that shoot well.

If you could recommend the below components, what would they be? Please remember that this is a Long Range hunter so prefer a heavy barrel and stock.

Which Savage Action (Is there one that will allow me to seat long bullets out further):
Which Third Party Stock (want composite, not wood):
Which Third Party Barrel (prefer threaded if possible):

Thanks!