.280 Ackley Improved

[IndyJay]

What kind of velocities can one expect from this cartridge shooting 140gr. bullets? Partitions in particular.

Thanks,

 

[danr55]

Jay, As usual, it depends on the rifle and the loads. The norm is just slightly less than the 7mm Rem. I would guess that realistically, you would see around 3050 fps.