30-06 red primer


#1

What does red primer mean in 30-06?


#2

As a rule, on US 30-06 the annulus color has NO significance. They used any color available.
The exceptions are the M1924/M1925 Tracer, and some FA 57 match rounds.


#3

I have another .30-06 with a headstamp: WRA Co, 30G 1906. The body of the cartridge is hued orange-red in a very patchy manner. Is that metal oxidation? Similar rounds in the same cigarette box look normal.