Originally Posted by chad
What was your velocities and how long was your barrel?
2 different rifles both finished @ 25", field verified at 3400 ft. elevation and 40F, 1-10 twist
H4831sc - running at 2840 fps w/168 berger VLD
Have been higher velocity but this is where my field verified accuracy was
at it's best
Retumbo - 2950 fps (different rifle) from H4831sc w/168 Berger VLD
Work loads up gradually as all rifles/barrels are different.
Not questioning the above response but I would be surprised if a factory 280 Rem would come with a 1-9 twist.