I think your choices are basically:
Bergera, Duece, Vudoo, RimX. In cost order, but the last two are basically same.
Rim X is the only one I think that you could buy your own pieces and put together yourself, or you can buy barreled actions of the last 3, or complete set ups of the bergera.
CZ is another option of a bolt rifle, but not the 700 compatibility. That said there are a lot of choices of parts now including stocks, so that could be a close option.
Regardless of what some may say, you are not going to get better inherent accuracy in one over the other. Sure, the parts matter, but the ammo & barrel combo that you could luck out on or not, is still up in the air.