UXO SupportDetailed UXO Risk AssessmentUXOUXO Risk Mitigation
20mm Small Arms Ammunition #
- Solid (except for tracer cavity)
- Hollow (with a base plug)
- Fuzed Shell (high explosive or incendiary fill)
- Armour Piercing – three times the penetrating power of a .303 rifle round. Useful against aircraft engines and light armoured ground targets
- High Explosive and High Explosive Incendiary – one hit with a single round on the self-sealing tank of a WWII-era aircraft would be sufficient to set fire to and disrupt the tank. Lethal damage to the crew would be probable with a hit in the fuselage anywhere near them.
- Semi-Armour Piercing Incendiary – will penetrate the armour found in WWII aircraft which protects the pilots and engines, and will have an incendiary effect on the ammunition, carburettors, fuel pipes etc.
UXO Risk Assessments+44 (0) 1992 245020info@1stlinedefence.co.ukHandbook for 20mm Small Arm Ammunition, Land Service, 1943 – produced by the War Office.
