HVAP/APCR/Small calibre APDS is so- so. horrible

In a recent match, I was using the U-Sh 204 GK and encountered a BTR-152D that had not noticed me. I stopped, aimed flat against the side hull at point-blank range (≈10 m), and fired continuously until my gun overheated. Despite the ideal engagement, every round shattered. The BTR then turned its turret and eliminated my crew in a single burst.

afmzs2


Anyway-

From a mechanical standpoint, this result is difficult to justify. The 20 mm Oerlikon is rated for roughly 57 mm of penetration at 10 m, while the BTR-152’s side armor is 10 mm, even accounting for a slight angle. Repeated shattering with zero penetration under these conditions should not occur.

More importantly, this is not an isolated incident. I’ve experienced similar behavior over several months, across multiple matches and vehicles, including the British Ystervark, the French AMX-10P (H-VAP), and, though less frequently- platforms using DM63. This issue has also long affected APCR ammunition, which often shatters outright and, when it does penetrate, produces The most minimal post-penetration damage. That would be fine if the rounds didnt shatter/non-pen every other round.

For vehicles that rely entirely on autocannons, this behavior is not just frustrating- it is deeply discouraging, as it undermines confidence in the reliability of the game’s armor and damage modeling.

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HVAP seems to be a mystical creature in gaijin’s eyes.

Honestly no different than any other subcaliber or core munitions in warthunder, which gaijin seems to think are too dense to spall, but too fragile to penetrate armor and literally shatter.

Will admit HVAP gets some of the worst of it though, the 57mm penetration on 20mm HVAP is very misleading. I honestly find .50 cals doing better

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Love the HVAP on the M53/59 (30-JPZSv-53/59).

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Ever since they nerfed the hell out of HVAP I have killed more targets with the .50 coax of the leclercs than I have with the amx 30 series coax 20mm. And it’s not for a lack of trying. Even if you get a BMP side on and it’s not a perfect 90° you just get shell shattered simulator.

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As noted above- its really wierd but i have found that the Akan m/47D Hvap for the Pbv 302 Bill has been really useful-? Much more than the Oerlikon, idk if the hizpano Hvap with the 0.02kg more mass really makes that much more of a difference?

afmv4q

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