[Joe 6-pack]

"...3.2 kg projectile at 10.64MJ (megajoules) with a muzzle velocity of 2520 meters per second..."

For comparison, the M829A3 for the M1A1/A2 Abrams main gun throws a sabot weighing about 3x that at a velocity of about 1,600 m/s.

[mylife]

Ye old paladin is impressive.

[mylife]

[Southack]

2520 meters per second = 1.566 miles per second = 5,637 miles per hour.

FYI, a molniya orbit requires only 3,335 mph. Geostationary orbit requires 6,935 mph (low Earth orbit requires at least 15,430 mph, though).