30mm ADEN AP ammo far to weak in penetration

The in game stat for the AP ammo of the DEFA 30mm is 21mm at 500m 0 degree. Contrast this to a .50 caliber which is 20mm at the same distance 0 degree.
A .50 caliber AP round of 42g at 3000 m/s has muzzle energy of 839 ft/lbs. A 30mm ADEN AP round has a weight of 270g and travels at roughly 2700 ft/s which gives a muzzle energy of 4370 ft/lbs a whopping 5.2x more energy than a .50 API round, yet only penetrates 1mm more? The armor penetration value of the DEFA AP ammunition should be far higher.

Contrast that to the 23mm in the IL2 which has muzzle energy of 4206 ft/lbs but can penetrate 29mm at 500m 0 degree.

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Need to submit a bug report;

https://community.gaijin.net/issues/p/warthunder

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Armor penetration depends on energy and, shockingly 😱, also on area at which that energy is applied to.

It has 5.2 times the energy but a 30mm is also 5.5 times as large, just comparing the area.

Not to mention that the shell has much worse ballistics than a .50cal, as it’s incredibly light for the area it has, loosing velocity very quickly over range.

The only thing wrong with ADEN/DEFA AP is that it’s not solid shot, like in War Thunder, but actually APCR.

It should have a tungsten carbide core and higher penetration.

Except that Gaijin gives APCR rounds far to little armor penetration.

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A 30mm projectile is only 2.36x the diameter of a .50 BMG round which is what matters. I don’t know where 5.5x comes from.

It’s the „area“ or cross section.

A larger cross section increase drag and distribute energy over a larger area.

Double the diameter and you get four times the cross section.

As long as the energy/area ratio stays the same, hardly anything changes about the armor penetration.

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