20% in speed and 40% in energy.
-TL
It is out of my own record. 110gr 30 carbine bullets. Powder was trailboss. Gas seal 813fps. No gas seal 676fps. 20% difference.If it really increased velocities and energies that much, you'd see weapon like the .357 magnum Desert Eagle producing 20% more velocities over a revolver firing the same load, would we not?
We don't. And the Nagant didn't increase velocities by much either.