I don't shoot the milsurp ball ammo...not accurate enough for target shooting...
That said, I have been buying and stocking some for the purpose for which it was intended. Should it ever be needed for that purpose, having a few thousand rounds, and a crapload of rifles that can shoot it will prove invaluable.
Certainly easier, and far cheaper, than stockpiling thousands of rounds of handloads for the same purpose.
I don't think you would ever regret buying at least a couple of spam cans...