Fixed round, with the projectile rigidly secured to the perforated steel cartridge cases by eight equally spaced ball-point crimps. The projectile involved has two indexing buttons 180 degrees apart on the forward bourrelet and a smooth drive band encircles the projectile just forward of the base.
| ROUND | |
| Type: | Crimped |
| Model: | HEAT M344A1 |
| Length: | 995 mm |
| Mass: | 16.4 kg |
| PRIMER | |
| Type: | Percussion |
| Model: | M57 |
| Length: | 995 mm |
| Load: | 64 g black powder |
| PRESENTATION OF THE PRODUCT | |
| 1 round in watertight carboard case | |
| 2 cardboard cases in wooden case | |
| Cases with 2 rounds: | |
| Weight: | 55 kg |
| Volume: | 0.082 m3 |
| Pallets with 24 rounds: | |
| Weight: | 660 kg |
| Volume: | 0.98 m3 |
| PROJECTILE | |
| Type: | HEAT M344A1 |
| Body material: | Steel (black painted) |
| Explosive charge: | 1.8 kg Comp. B |
| Fuze type: | PIBD |
| Fuze model: | M509A1/A2 |
| Marks: | Yellow |
| Length: | 716 mm |
| Mass: | 8 kg |
| PROPELLING CHARGE | |
| Type: | Double base |
| Designation: | M26 |
| Characteristics: | Multiperforated |
| Mass: | ~ 3.6 kg |
| CLASSIFICATION | |
| ONU No.: | 0321 |
| Group: | 1.2 E |
| NSN: | 1315-33-002-2008 |
| CASE | |
| Model: | M94B1 perforated |
| Material: | Steel |
| Length: | 609 mm |
| Mass: | 4.4 kg |
| BALLISTIC DATA | |
| Muzzle velocity: | 503 m/s |
| Chamber pressure: | ≤ 83 MPa |
| Approximate maximum range: | 7,640 m |
As the projectile is fired and is propelled along the barrel, a portion of the propellant gas is tapped and retained within a chamber within the piston assembly. As soon as the projctile leaves the gun muzzle, the high-pressure gas contained within this chamber forces the piston to the rear, extending the six tailfins, these lock in place and proide the in-flight stabilisation.
On impact with a target, the piezoelectric element generates the electrical charge required by the PIBD fuze function, detonating the projectile´s HE filling.
The resultant detonation collapses the liner onto its own axis of symmetry producing a hypersonic metallic jet that penetrates the target armour.
Can be used also 106 MM TP M34V version. This cartridge is used for 106 mm guns (M40A2 and M40A1C recoilless rifles). It is used for firing and aiming practices.
