In 1925, the Jazz Age was in full swing. Mount Rushmore was dedicated, and the Scopes “monkey trial” involving teaching evolution in schools was held. F. Scott Fitzgerald published The Great Gatsby. At the other end of the literary spectrum, Adolf Hitler published Mein Kampf.
At the beginning of the year, the 10-year-old .250-3000 Savage was still the fastest commercial rifle cartridge. That would change. Winchester introduced its .270 and, across the pond, Holland & Holland introduced the Super .30 Belted Rimless, the cartridge we’ve long known as the .300 H&H Mag. It’s unclear which came first, but in quick succession they became the second and the third cartridges to break 3,000 fps.
The Super .30 was initially offered in 150-, 180- and 220-grain bullet weights at, respectively, 3,000, 2,750…