Quarter-bores disappeared from the spotlight for a while, but .25-caliber cartridges are now coming back in a big way.
There are more than a hundred rifle cartridges, but the most popular are in 0.224-, 0.243-, 0.264, 0.284 and 0.308-calibers.The most popular of those have always been 0.224 and 0.308, and it wasn’t until the late ’50s that 6mm (0.243-caliber) cartridges became relevant.
Although 6.5mm (0.264-caliber) and 7mm (0.284-caliber) cartridges predate the last century and have long been popular in Europe, Americans never really embraced the sevens until the ’60s, and the 6.5s until about 15 years ago.
However, up until the ’80s, 0.25-caliber cartridges were very popular. For a time, they disappeared from the spotlight, but they are beginning to shine again.
SAAMI currently lists 10, 0.25-caliber rifle cartridges, and they all have practical appeal if not a claim to fame.
The Quarter-Bore Revival
Quarter-bores disappeared from the spotlight for a while, but .25-caliber cartridges are now coming back in a big way.
Here is 134 years of quarter-bores (left to right): Winchester .25-20, Winchester .25-35, .250 Savage, .257 Roberts, .257 Weatherby Magnum, .257 Roberts +P, .25-06 Remington, .25 WSSM, .25 Creedmoor and Weatherby .25 RPM.