Low lunar orbit is a bit less than that, ~1.7 km/s. Higher than a rifle round, but a "kinetic energy penetrator" from a tank gun gets that fast [0] Many years

Low lunar orbit is a bit less than that, ~1.7 km/s. Higher than a rifle round, but a "kinetic energy penetrator" from a tank gun gets that fast [0] Many years ago I read a short story about a gun battle on the moon where the bullets orbit the moon. Took me an hour to find it: Men of Good Will by Ben Bova & Myron R. Lewis Galaxy v22n05 (June 1964), p 170. [1] 0. https://en.wikipedia.org/wiki/Muzzle_velocity https://en.wikipedia.org/wiki/Muzzle_velocity 1. https://archive.org/details/Galaxy_v22n05_1964-06_modified/page/n111/mode/2up https://archive.org/details/Galaxy_v22n05_1964-06_modified/p...