High Explosive Proximity(HEP) ammunition for M230

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XM1211 High Explosive Proximity (HEP) rounds

Specification

LENGTH: 199.99 mm
CARTRIDGE WEIGHT: 340 g
PROJECTILE WEIGHT: 230 g
PROPELLANT WEIGHT: 52 g
PROPELLANT TYPE: Ball
PRIMER: M36A2 Percussion or PA520 Electric
MUZZLE VELOCITY: 2,641 fps / 805 m/s
DISPERSION: 1.35 m radial maximum

The XM1211 High Explosive Proximity (HEP) round is designed for the M230 Chain Gun, a 30x113mm automatic cannon used primarily on platforms like the AH-64 Apache helicopter. This advanced ammunition combines a high-explosive warhead with a proximity fuse, allowing it to detonate near targets, increasing effectiveness against aerial threats.

The shell’s proximity fuse is self sufficient to operate, means that it doesn’t need external device like AHEAD ammunition, meaning that every M230(or M230LF) can fire it without modification.

The current HEDP rounds fired by the M230 Chain Gun are not well-suited for air-to-air combat due to their low velocity. The XM1211 addresses this issue. However, since it is a fragmentation round, it has little to no armor penetration capability, making it less effective for striking ground targets. For ground engagement, the HEDP round would be the better choice.

While the XM1211 is used on the AH-64E, this is because the AH-64 currently in service with the U.S. is the Guardian variant. The AH-64E’s chain gun is essentially the same as that of the AH-64A, so the ammunition specifications remain unchanged. Even if the AH-64E and XM1211 are not yet featured in War Thunder, I suggest considering this round for future reference.

Demonstration of HEP rounds on M230LF

Images

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https://unsafelink.com/https://www.highergov.com/contract-opportunity/solicitation-30x113mm-xm1211-high-explosive-proxim-w52p1j-23-f-1211-o-62eb1/

https://asc.army.mil/web/portfolio-item/ammunition-medium-caliber/

9 Likes
2

+1 as “counterpart” to Russian helis with APDS

3 Likes
3

How good its against planes? as far as I know, planes have more armour and resistance than helis

4

effective range less than 2km with low accuracy.
Against 4km effective range APSD (not even in real ka50 arsenal)

6

“effective range of 3000+ meters”
in the game we can’t even stand still and fire effectively at 1000 meters

7

hopfully they add this, because right now its just funny how bad this gun is against air targets which is pretty much all it can be used for

8

Please, Gaijin, bring this prxoy thing into the game in the next major update. Currently, the Apache’s gun is pretty useless against aerial threats.

9

new updates

10

Dont forget were also suppose to have the AGR-20E IR Heatseeking Fire and forget APKWS 2 rockets with the Mk66 Mod4 enhanced motor and the M229 17pounder warhead, with VT/Flak fuze for shooting at air targets, missiles, airbursting over infantry/the ground, and on ground based shorad systems for shooting at missiles, drones and helis.

All apwks platforms need this rocket and the AGR-20C Laser guided M247 AT Hydra warhead as options aswell.
China already even has this with the Firesnakes. idk why US cant get theirs.

Between the Flak rockets, and the 30mm Airburst rounds we could get the M6A4 Mshorad, the strkyer IMShorad, and the MIADS added to the US. as all 3 of them use that gun and ammo config.

M6A4 Mshorad BAE Systems presents Bradley M-SHORAD air defense AUSA 2017

Stryker M-shorad:

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MIADS:
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2 Likes