"Even with the extra case capacity and higher pressures allowed in .280 AI (versus standard .280), you're still lucky to be able to hit 2,600 fps with a 175 gr bullet."
Guess nobody told my 24" barreled .280 Rem. that. I get 2650 FPS using 53.0 gr. of WMR powder. (Cauition: max load. Powder also discontinued about 10 years ago ) Bullet was the 175 gr, Hornady Interlock.
FWIW the latest Nosler manual show about seven loads doing velocites in the 2700+ range and all velocities 2600 or higher. Granted, thy used a 26" barrel but at least half of those loads were high enough that 2600 from a 24" barrel would be more than feasable. Come to think of it, if those loads are to SAAMI standards, then surpassing 2600 FPS might not be all that difficult even with a 2" barrel. Sorry. I'm not cutting the barrel shorter on my rifle to try and prove the point.
Paul B.
Guess nobody told my 24" barreled .280 Rem. that. I get 2650 FPS using 53.0 gr. of WMR powder. (Cauition: max load. Powder also discontinued about 10 years ago ) Bullet was the 175 gr, Hornady Interlock.
FWIW the latest Nosler manual show about seven loads doing velocites in the 2700+ range and all velocities 2600 or higher. Granted, thy used a 26" barrel but at least half of those loads were high enough that 2600 from a 24" barrel would be more than feasable. Come to think of it, if those loads are to SAAMI standards, then surpassing 2600 FPS might not be all that difficult even with a 2" barrel. Sorry. I'm not cutting the barrel shorter on my rifle to try and prove the point.
Paul B.