280 REM, also known as the 7mm express. Faster than the 270 with the same bullet and flatter shooting, more accurate with more punch at distance than the 30-06. Plus its cool. Case closed.


280 Remington vs. 270 Winchester

The .280 Remington is capable of generating slightly higher velocities with a given bullet weight than the .270 Winchester, and also able to use heavier bullets due to the larger .284" diameter. .284" bullets also have higher ballistic coefficients at the top of the weight spectrum than .277" bullets. The greater energy and higher ballistic coefficient of heavier .284" bullets give the .280 Remington a slight ballistic advantage over the .270 Winchester.[3][4]
[edit]280 and .30-06

The .280 Remington is capable of developing energy nearly equal to the .30-06 Springfield, but with lighter bullets having a better ballistic coefficient. Thus, the .280 has a better trajectory and retains more energy downrange. The .30-06 produces more energy than the .280 with bullets heavier than 180 grains, though .284" 175 grain bullets have a high sectional density of .310, compared to the 30-06 180 grain bullet with a moderate sectional density of .271. The .280 is suitable for hunting any game in North America with good shot placement.
SAAMI pressure limit for the .280 Remington is set at 60,000 PSI, 50,000 CUP.[1]
Most American rifle and ammunition manufacturers catalogue the .280 Remington.