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

ARC Practicalbenefits Lambkyle 1A
ARC Practicalbenefits Lambkyle 1A

NRA America’s Rifle Challenge: Kyle Lamb on the Practical Benefits of Competition

Kyle Lamb explains why competition is the best test of gear and skill, then demonstrates a strong-to-support-side rifle transition on the ARC barricade.

Real Avid Bundles The AR Workbench Into One Box With New Master Collections

Real Avid launches bundled AR-15 and AR-10 Master Collection toolkits that scale from cleaning basics to full armorer setups, with prices ranging from $519 to $2,542.

Ole Miss Wins First NCAA Smallbore Rifle Team Title

Ole Miss rifle wins first NCAA smallbore title at 2026 NCAA rifle championship at Ohio State’s Covelli Center on Friday, March 13.

Gator Cup Returns to Back Woods Quail Club with Beretta DT11 Giveaway

The 2026 Gator Cup at Back Woods Quail Club in South Carolina runs March 24-29, featuring eight events, guaranteed payouts and a Beretta DT11 giveaway.

New: Springfield Armory XD Mod.4 OSP

Springfield Armory’s XD Mod.4 OSP is a 9 mm striker-fired pistol with a factory-milled optics-ready slide, flat-face trigger and passive grip safety, shipping in 16-round and 10-round configurations at $399.

Mark The Milestone: Federal’s America 250th Commemorative Loads Have Arrived

Federal Ammunition’s America 250th commemorative line is shipping now with five loads across the American Eagle, Top Gun and Champion families, priced from $12.99 to $74.99.

Interests



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