Military 7.62 is typically loaded with powder around the speed of 3031 to 4895. This is a very, very useful speed of powder. Anyone buying such powder is well advised to buy at least one 8 pound jug, and nothing smaller, because once you have established loads for it, there won't be any more.
I have used several tons of similar powder and find it perfect for all but the most demanding applications.
Also, that brass should be sold. A berdan primed case gives very good SDs becasue the small flash holes are better than the larger holes in Boxer cases.
I used to use weighed Berdan cases as my preferred target rifle brass.
It would be perfect brass for making m14 plinker ammo, or one-way hunting ammo.
problem is cost vs shipping. I have about 10,000 similar cases and don't sell them becasue I think shipping costs would exceed sale price.
I was thinking of selling it with a similar amount of tracers, so guys could make their own tracer ammo. It would be a good way to get rid of the cases and tracers.
Have you considered selling the cases, powder and bullets as "kits"?