APHE round

High-explosive incendiary / armor - piercing ammunition ( HEIAP ) is a form of shell which combines armor - piercing capability and a high - explosive effect . In this respect it is a modern version of an armor piercing shell . The ammunition may also be called semi - armor - piercing high - explosive incendiary ( SAPHEI ) 1 Typical of a modern HEIAP shell is the Raufoss Mk 21112 designed for weapons such as heavy machine guns and anti - materiel rifles . lead steel mid steel cup zirconium airconium powder tungsten carbide penetrator Raufoss Mk 211 See also edit • High explosive incendiary -RAS1 - PETN ROX COMP A - 4 References edit 1. ^ " PGU - 27A / B TP / PGU - 28A / B SAPHEI / PGU - 30A / B TP - T " . Retrieved 2008-09-28 . 2. ^ " Nammo Ammunition Handbook " ( PDF ) . 3. ^ a b Pike , John . " Mark 211 .50 - caliber Multipurpose Ammunition " . www.globalsecurity.org copper jacket The primary purpose of these munitions is armor penetration with better beyond - armor effects . ³ Similarly to SLAP rounds ( saboted light armor penetrator ) which get their armor - piercing ability from the propulsion of a 7.62mm tungsten heavy alloy bullet from a 12.7mm barrel ( .50 caliber ) using a sabot with much more energy than is usually possible from a 7.62mm round , HEIAP munitions utilize a similar theory with an added explosive effect at the end.