of the champions of the .30 caliber was Colonel Rene Studler, who had worked his way up the military ladder to chief of the Small Arms Research and Development Division of the U.S. Ordnance Department. Studler had enjoyed an exemplary career, with a string of successes including the M1 steel helmet, the M3 submachine gun, and the Williams M1 Carbine. If anyone could get the bureaucracy moving on an automatic weapon, Studler was the man.
While work was under way, international politics entered. With the formation of the North Atlantic Treaty Organization (NATO) after World War II, there was a desire for a uniform weapon and ammunition that could be used by all signatories, including the United States. The European NATO nations believed that the day of intermediate rounds had come, and their struggle with the United States for a smaller standardized round left the world of reason and entered the realm of nationalism. With the United States being the most powerful nation in the world, and the force that had defeated the Axis powers, the Europeans faced an uphill fight. The large round became the cause célebrè for the Americans and a point upon which they seemed unwilling to yield.
British thinking on the subject of cartridge design, however, was very advanced. British designers had been experimenting with a still smaller round, the .276 caliber, as far back as 1924. Because of their light weight, small bullets like the .276 and even the .22 caliber—the kind used by weekend critter hunters—could be propelled at such high speeds that they extensively destroyed body tissue through a process known as hydrostatic shock. The argument seemed counterintuitive to many who just assumed that a larger bullet would do more damage, but in fact a smaller, higher-velocity bullet contains so much kinetic energy—because less energy is spent propelling its small weight through the air—that once stopped inside an enemy’s body, all its pent-up energy is immediately discharged to destroy surrounding tissue and vital organs. These were not just ballistic theories. So-called Pig Boards, tests in which pigs, whose anatomy resembles that of humans, were shot with small-caliber bullets propelled by high-powered cartridges, proved the devastating power of small-caliber weapons.
If the U.S. military was unwilling to budge from the .30-caliber cartridge, the chances of accepting an even smaller round, let alone an intermediate round, were nil. The fight that followed almost split NATO apart only a year after the pact was signed. After witnessing comparative test firings of a Belgian FAL rifle, their own EM-2—both using a .280 cartridge—and the T-25, a modified M1 firing half-inch-shorter .30-caliber bullets, the British contingent returned home from the United States and announced they were going with a .280 round and their EM-2. To hell with the Americans and their .30-caliber weapon. To hell with NATO. The United States held fast to the obsolete .30-caliber round and, in effect, offered no concessions to its European counterparts as far as ammunition was concerned. Purists noted that although the caliber was called .30, it was not a .30-06 but a 7.62 × 51mm, also known as the .308 Winchester round. The .30-06 was in actuality 7.62 × 63mm.
You might think that the public would not have cared about these seemingly small differences, but the argument captured the attention and ire of the British public, who, somewhat remarkably, understood enough of the fine points of the ammunition fiasco to be peeved. Passionate arguments in Parliament split the country. One side wanted Britain to go it alone without the United States or NATO and produce their rifle with the small round. The other side believed that a unified NATO was the country’s best defense against a growing Soviet threat and that giving in to U.S. demands was the best course.
The fight lingered for years with neither the Americans nor the British giving way.