The brass in your second picture is Turkish Surplus, 8mm Mauser, made in 1947.
TC is the Turkish abbreviation for Republic of Turkey. The symbol between the T and C is the crescent moon and star, which matchs what is on the Turkish flag.
This is generally seen to be pretty good ammo, but it is corrosive, and must be treated as such.
"The gift which I am sending you is called a dog, and is in fact the most precious and valuable possession of mankind" -Theodorus Gaza
Baby Jesus cries when the fat redneck doesn't have military-grade firepower.