What Is That Milsurp Loading?

by
posted on May 16, 2019
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
milsurp-throwback1.jpg
As with all milsurp ammunition, we must know more than just the type of cartridge we intend to shoot; as military cartridges were and are routinely loaded with tracer, incendiary and sometimes even explosive projectiles. These all pose obvious hazards, including armor piercing ammo, which have been blamed for sparking wildfires and thus in many places is illegal to shoot.

In the accompanying photo at the top of this article, the headstamp on the .303 British case on the left tells us it was manufactured in 1948 (“48”) at the Greenwood and Batley (“GB”) facility in England, and that the projectile is the MK VII ball round (“7”). The cartridge on the right is a G2 tracer round (“GII”) from the Royal Ordnance Factory, Blackpole, Worcester (“BE”), England, in 1943 (“43”).

More correctly, manufacture of the cartridge cases occurred at these facilities, but “filling” (as the British call it) of the cases with propellant occurred at different locales, probably due to concerns with accidents and sabotage—as well as for dispersing manufacture to mitigate losses from enemy bombings. Therefore, BE cases received their cordite at Swynnerton, and the Abbey Wood and Farnham facilities filled the GB cases.

Information on these headstamps came from the Carpetbagger Aviation Museum in Harrington, United Kingdom. The museum opened in 1993 to honor Americans of the 801st/492nd Bomb Group, which carried out Operation Carpetbagger to supply resistance fighters in Occupied Europe during World War II. The museum also has an extensive ID list of cartridge headstamps used by the U.S. during that war.

More articles from SSUSA Field Editor Art Merrill:

Latest

Rem Wethepeople America250 Jun2026 1
Rem Wethepeople America250 Jun2026 1

Remington We the People 250th Anniversary Ammo Ships to Retailers

Remington’s We the People 250th Anniversary ammunition is now shipping nationwide, a 2026-only commemorative run across rifle, handgun, rimfire and shotshell loads.

Kansas and Texas Headline Team Titles at 2026 4-H Shooting Sports Nationals

Kansas and Texas each claimed two team titles at the 2026 4-H Shooting Sports National Championships, which drew nearly 700 competitors to Nebraska.

XS Sights Adds Pre-Drilled Fiber Optic Sights for Smith & Wesson Revolvers

XS Sights now offers pre-drilled fiber optic sights for Smith & Wesson J-, K- and L-frame revolvers, installable without custom gunsmithing.

NRA Youth Ambassador Jackson Schmidt’s Bianchi Cup Experience

NRA Youth Ambassador Jackson Schmidt shares his first Bianchi Cup International Pistol Tournament, where he won Junior Rimfire division and placed third in Junior Centerfire.

Review: Vortex Strike Eagle 1-10X 24 mm FFP

A review of the Vortex Strike Eagle 1-10X 24 mm optic, a first focal plane LPVO built for multigun and IPSC Rifle competition.

Remington Performance Wheelgun 22 Rimfire Built for Classic Revolvers

Remington’s Performance Wheelgun 22 rimfire load is shipping nationwide, a 39-grain subsonic .22 LR cartridge built for classic revolvers and plinking.

Interests



Get the best of Shooting Sports USA delivered to your inbox.