What does the bullet base 1 107 mean?

The numbers below the bullets represent:

The number on the bottom of the cartridge case is the manufacturer and year code of the bullet. If the two sets of numbers are in the same direction, the factory code is above and the year code is below. If there is a decimal mark, then the decimal point is the year code. If the last digit of a set of numbers is "1" (except those with decimal points), it represents the manufacturer.

The year and code before 1953 are universal. For example, 1949 is1949;

Bullets from 1954 to 1960 have different years and codes, such as "54" (or a), "b", "c", "d", "Si" and "Zi", which respectively represent 1954 to 6544.

After 196 1 year, the last two digits are used for the year code.

For example, "66 1" stands for manufacturer code and "76" stands for 1976.

After 196 1 year, the last two digits are used for the year code.

For example, "992 1" stands for manufacturer code (military enterprises are called by code), while "73" stands for 1973.

You can't judge the model of a bullet by the number of bullets, because all bullets produced in China are printed like this. You have to judge the type of bullet from the shell casing and the diameter of the bullet.