also,
Nat ord, Santafe arms. cast receivers Carbines, A3,s and Garands were sand cast , and made in Spain. not investment cast like the Ruger 77, Browning BLR, and early Savage receivers.
the investement cast heat treated receivers work very well, fit nice, and look nice.
i own a few Rugers, and have yet to have an issue with them.
i dont feel the same for the Browning...but not do to its steel, only the company, and how it markets the POS of a rifle they sell now.