The .303 British is a rimmed rifle cartridge that was first
developed in 1888 to be used with the Lee-Metford rifle. Though it was
originally created using black-powder, in 1891 it transitioned to smokeless
powder. It served as the standard British and Commonwealth military cartridge
from 1889 to the 1950s, when it was replaced by the 7.62x51mm NATO.
Since the introduction of the .303
cartridge in 1889 it has been manufactured in at least 20 countries and in
nearly 200 military variants as well as in numerous experimental and sporting
cartridge configurations. It may be of some interest to learn that during the
First World War more than 700 million Mk 7 ball cartridges were produced by
British factories alone.
Although the United States of
America did not officially adopt a .303 rifle, it did produce nearly a
third of the wartime production of No 4 rifles used by British troops. US Lend
- Lease production for the UK was 1,196,706 No 4 rifles whereas the total
British wartime production of this rifle was 2,021,913. This of course was not
the total number of .303 rifles produced in the UK during WW2, as the SMLE
Rifle No 1 was still being manufactured, BSA alone producing nearly a quarter
of a million No 1 Mk III and III* rifles. The USA had also produced the .303
Pattern 1914, also known as the Rifle No 3 Mk 1 or 1*, for the British
Government during WW1. The USA should, therefore, along with Australia, India
and the United Kingdom, be considered as one of the major producers of both
.303 rifles and ammunition.
Each box contains 100 once fired brass shell casings. Headstamps are mixed. This is unprocessed brass sourced from commercial shooting ranges. The casings have been washed and polished, but not resized and may still contain the spent primer.
It is recommended that all brass be inspected prior to being reloaded and fired.