The only difference is that they may have a different quality of finish on the outside of the receiver. The lower priced ADLs and new SPS M700s will have a coarse matte finish while the BDL or newer CDL will be either polished or finished with a classy soft matte finish.
Accuracy potential, no difference at all. I get in the lower priced 700 receivers all the time to build my customers rifles. Course once they are all fully accurized they are s totally different critter then any factory offered Rem 700.
If your building a custom rifle
from the ground up, do not spend the money for the upper priced Rem 700s when the lower priced will perform equally as well and save you from $150 to $200 in receiver price. Spend that money on a full accurizing job and you will be much happier!!!
The difference between the ADL and BDL is that the ADL has a blind magazine with a solid bottom stock with no magazine floorplate.
The BDL generally has a better finish and has the open hinged floorplate.
To be honest, the ADL design is a stiffer more accurate design as the stock will not flex nearly as much as the BDL. For my extreme accuracy rifles I prefer the ADL stock design.
Kirby Allen (50)