173gn FMJBT, made from early 1920s to 1939 or so, when replaced by re-birth of original M1906 cartridge, with new 152 grain FMJ (flat base) and new Powders. ( so the new garand Rifle would function properly)
The M1 Cartridge was developed after long experiments from 1917 tp 1921-2, on long range shooting of Browning MGs at Daytona Beach using Swiss M1911 projectiles and appropriate loads to get maximum MG ranges of 3,900 to 4,400 Yards. (Read Hatcher’s Note Book).
The “National Match” cartridge was an outgrowth of the M1 cartridge, produced in the late 30s right through to the 1960s ( cases are marked “NM” or “MATCH”.
The “FA 30 R” cases were originally a Rifle Grenade launching developments, using the Ball round and a “capture” ring in the grenade ( Viven-Bessiers System).