Rick,
Who's said the 6.5 Creedmoor matches the .280?
I was pointing our how the 6.5 Creedmoor, used with the same brand/type of 140-grain bullet as the .270 starts immediately (and pretty quickly) catching up, to the point where the 6.5mm bullet is within 100 fps at 500 yards--despite starting 250 fps slower.
The velocity I used for the 6.5 Creedmoor, 2750 fps, is exactly what I get with 140's in a 22" barrel, using the load I've settled on for the moment, 43.0 grains of IMR4451. Sierra lists 42.9 grains as getting 2800 in a 24" barrel.
Speer's latest data, just recently released, lists 42.1 grains of Reloder 26 getting 2849 fps with the also-new 140-grain Gold Dot--which has a listed BC of .571. Am planning to test 26 with other bullets ASAP, but also need to get hold of some of the Gold Dots.
You're obsessing about muzzle velocity again!
