#1940s

In mid-1970s USA, a revolution was brewing, but not one of disenfranchised peasants or minorities. Instead, the time-tested and classic pistols of American gunmakers were about to be upset by European invaders. The Wondernine was coming, and on its heels the Aglockalypse. By the end of the second decade of the new millenium, no challengers would be left standing, and the high capacity Europellet 9mm would reign supreme.

The M1 Carbine is a lightweight, handy weapon that is well-liked by many. One of its weakest points for many people, however, is its cartridge: The .30 Carbine caliber is regarded by some as being too weak to be a true intermediate caliber round fully capable of effective 300m fire. Still, the .30 Carbine is short, so maybe there is another caliber out there that could fit into an M1 Carbine’s action while giving it a little more punch… It turns out that during the late 1940s and early 1950s, at least one Spanish small arms designer felt the same way, and invented the gun in the Forgotten Weapons video below:

Today on an extra special episode of Historical Intermediate Calibers, we’ll be taking a look at one of the most controversial experimental military rounds, one that many believe should have become the standard for the Western World at the beginning of the Cold War. That round is the .280 British, also known as the 7x43mm, and beginning in 1947 it competed head-to-head against the caliber that eventually became the 7.62 NATO in trials to become the standard infantry small arms caliber of the free world. The .280 British has, in the almost 70 years since its invention, become one of the great “might-have-beens” of the small arms ammunition world. Many small arms enthusiasts wonder how firearms history might have been changed if this brilliantly designed British 7mm round had been adopted by NATO instead of the overlarge and too-powerful US-designed 7.62mm.