RE: Remington SPS ????
As a point of FACT, there is NO difference in the action of the SPS, the ADL, the BDL....or the CDL - except for the FINISH. When Remington machines the 700 actions, they are all done on the same lines. There are only two variations, before finishing - short action and long action. The raw materials are exactly the same....the machining is exactly the same....the heat treating is exactly the same. In fact, before finishing, a particular action could go into ANY of the different models. The actions are made in one portion of the plant...and the finishing/ assembly in other areas. Actions for each model (in the white) are simply selected from a common parts "dump". Then, they move on to be finished.
Do not make the mistake of many others, in assuming that the different models are somehow made differently...or of different materials. That is utter nonsense. It's a popular misconception, for some reason - but it simply isn't so.
There, of course, is a difference in the finishes. The bluing, I mean. The parts are polished to the same degree before bluing. It's simply a matter of whether this or that particular part will go to the SPS area....or the CDL area. This determines what kind of buing it gets....(either matte, or the deep bluing). There is absolutely NO determination made beforehand, as to say, CDL parts, for example, getting a better polish....or more careful machining...or anything of the sort.