Family of Sub-Sonic Ammunition

This program will consist of a three prong approach to provide an unbiased assessment and development of subsonic ammunition with the highest success rate balanced against technological advancement. Our feasibility study will include: 1) A brass case utilizing a polymer insert to optimize subsonic interior ballistics, 2) A lightweight low cost aluminum cartridge case utilizing a polymer insert, and 3) A polymer cartridge case with an optimized internal volume. To address the gas energy required to operate gas powered weapons, SWS has an optional secondary propellant charge concept to supplement the gas energy from the primary granular propellant. SWS will conduct an extensive interior ballistic evaluation looking at thousands of propellant blends to identify the best configuration to achieve optimal subsonic performance.