The .303 British, often shortened to .303 Brit, is a cartridge pushing 140 years of age, first introduced in 1888 and involved in nearly every major conflict of the 20th century, making it one of the most storied military cartridges in history. While the 7.62×54R holds the distinction of being the longest continuously serving military … Continue reading 303 British: Design, Performance, and Lasting Relevance