OVERVIEW: 125mm High-Explosive Anti-Tank (HEAT) ammunition for the 2A82-1M tank gun is engineered to defeat heavily armored vehicles through the use of a shaped charge warhead. It is designed to penetrate armor regardless of range by focusing explosive energy into a narrow jet capable of breaching modern composite and reactive armor systems.

DETAILS: These rounds contain a conical shaped charge with a metal liner that forms a high-velocity penetration jet upon impact and detonation. HEAT rounds fired from the 2A82-1M benefit from increased accuracy and velocity due to the gun's higher chamber pressure and advanced fire control systems. Modern HEAT rounds may incorporate tandem-charge warheads to overcome explosive reactive armor (ERA). Some variants also include a tracer element and may be used effectively against bunkers and light structures, offering a secondary high-explosive effect.

ROLE SUMMARY:
Category: Tank Gun Ammunition
Primary Use: Anti-armor
Function: Armor penetration through shaped charge jet
Strong Against: Armored vehicles, bunkers, reinforced positions, vehicles with ERA
Weak Against: Active protection systems, spaced armor traps, soft targets, infantry in cover
Platform: Modern MBTs with 125mm smoothbore guns
Integration: Optimized for 2A82-1M (e.g., T-14 Armata), compatible with older 125mm tank guns with performance limitations

SOURCE:
Janes Ammunition Handbook
https://en.wikipedia.org/wiki/2A82-1M