Officials huddled at a video screen for a first look at a deadly new supergun that can fire a 25-pound projectile through seven steel plates and leave a 5-inch hole. At Dalhgren last year, military engineers test-fired 5- and 6-inch Navy guns loaded with a version of the railgun projectile. The Pentagon also tested the railgun projectile in 155mm Army howitzers, successfully extending its range. Pentagon officials declined to discuss the matter further. While slower than a railgun, a powder-fired railgun projectile still flies at 2,800 miles an hour, which extends the range and power of existing weapons.

Source: Wall Street Journal May 27, 2016 08:57 UTC