7.62 NATO brass vs commercial .308

Yes

Surplus 7.62 NATO brass is fine for reloading....just be sure to lower your powder charges and don't expect exceptional accuracy.  I reload for my Anderson Arms AM 10 which is chambered for .308 Winchester and have loaded for accuracy and loaded for cheap plinking.  I bought 2,000 M80 Ball pulled bullets and a bunch of Lake City brass for cheap shooting and have been only able to achieve 2.25 MOA with those components.  Compare that to 1 MOA when I use Hornady .308 Winchester match brass, 168 gr. SMK bullets and Varget powder.  

I'll be shooting 7.62 out of my Parker Hale T4 target rifle and my DCRA No.4 rifle. Obviously segregating ammo to each rifle. I'll need to find the proper loading inforfmation. So far, I have found info as follows: Hornady 168grain BTHP on 41.2 g's IMR4064 and LRP's. I have the bullets and the primers. My Speer reloading manual states that most military cases have primers that are crimped and to remove that crimp before loading LRP's. The book also mentioned to reduce commercial load data whenn loading military cases by at least 3%. This is going to be a fun time!

A good generic starting point it is to drop  or raise your current load by 1.5 Gr depending on which way you're transiting to.

41.2 gr IMR 4064 will be a mild load with 168’s and a 7.62 NATO case.