During the National Defense Industries Association Armaments Symposium (NDIAAS), researchers with the Crane Division of the Naval Surface Warfare Center (NAVSEA) had the opportunity to present their ideas and show the progress they’ve made on the development of these armor-piercing sniper rounds.
Their primary concerns have to do with the projectile’s cost, effect on rifle barrels, and uniformity. What they have come up with is the Aeroshell projectile. The Aeroshell uses a tungsten penetrator—similar to those used by armor-piercing projectiles like anti-tank missiles—jacketed in a polymer shell casing as opposed to the more traditional copper jacket.
NAVSEA researchers are planning to manufacture approximately 150 Aeroshell armor-piercing rounds in the following three calibers: .338 Norma Magnum, .300 Norma Magnum, and 6.5 Creedmoor. To gauge effectiveness, they will test the rounds against personal body armor at different ranges (100, 400, 800, and 1,000 meters).