THESE DAYS, if it ain’t “Creedmoor,” “PRC,” “WSM,” or maybe “.28 Nosler,” it just ain’t … well, you get the idea. Don’t get me wrong! The latest new cartridges are awesome, but not all of us have sprung for them. Some because we can’t afford to; others because, well, we’re happy with “Old Betsy.” Chambered to vintage cartridges, some younger readers may not have heard of old, tired numbers such as .270 Winchester and .30-’06 Springfield.
Back in 1906 and 1925 when the .30-’06 and .270 were each introduced, we didn’t know what we didn’t know. Modern case design — shorter and relatively fatter with sharper shoulders — is more efficient, demonstrably producing more energy per grain of powder burned. Burning efficiency contributes to accuracy. Thanks to precise modern manufacturing…
