What barrel and twist rate for heavier bullets? what action? What stock and how to make sure they work together?
I would go 1 in 8 for heavies, especially if your below 5000 ft elevation.
All of the major manufacturers make excellent barrels, Krieger, Brux, Broughton, Lilja, Bartlein, Criterion or Mcgowen are good for prefit savage barrels...You won't go wrong with any of them, especially over a factory barrel.
Remington or Savage action if you have one around, if you want to go custom action, there are lots available, and since I don't have any experience with custom actions I won't speak on that.
If you wan't to budget on your stock, Boyds make some decent laminated options in several different configurations, sporter, thumbhole, varmint, tactical, ect. Stockies also has some decent laminated options as well. Keep in mind, these will need to be pillared and bedded. If you want something synthetic, on the lower end you have Bell & Carlson, I have one of these, and it's not bad, but it's not the best. Mcmillan makes some awesome stocks, with tons of different custom options, but you pay for them. New, you won't get one under $500, and can spend nearly double that if you add on flushcups, LOP extensions, cheek riser, bipod rail, or some of the other things. These are top of the line.
Hopefully this gives you some options. I would suggest looking at the extended mag boxes from PTG or Wyatt's or one of the other manufacturers for whatever action you get, that way you can run those 195 EOL's all the way out to the lands to get the most out of them. If you have $2,000 you are going to spend on a rifle, there is no reason not to build it EXACTLY how you want it, and not have any limitations such as OAL or not enough twist to run the bullets that get the most out of that chambering. I know you asked about factory rifles, and that has been answered, but from experience, I would strongly suggest building with a budget like that. You will like it better than any factory gun. Plus, YOU will be the one who put it together.