APDS shattering and APHE fuse failure

It’s just in the nature of APHE fuzes to be extremely unrealiable because of the forces on the fuze during slope armor penetration.

Bottom fuzes work by inertia driving a firing pin into a detonator.
When a shell strikes armor at 30° and more it gets deflected before it normalizes back into the other direction. These uneven forces cause the firing pin to get stuck instead of getting dislodged, preventing the fuze from working.

So at best you have a range of armor thickness and slope where the fuze will work reliable.


I do and I appreciate it, appart from the fact that it doesn’t really make sense to have tungsten-carbide ammunition shatter but tanks can repair their engine or breech in 30s 😂

WT is just a big mess of oversimplification that result in a lot of dumb and unrealistic things happening.

This “two guys keeping a tank running and repairing it like fresh from the work-shop” is one of that.


That’s the problem, it’s too confusing to put realistic mechanics in a game for certain things and more arcade mechanics than those of WOT in others.


Ah just on a sidenote, while i dont want fuze reliability, i dont have a double standart here, i do also think that shattering how it is in game, is also not good. And should if not also be removed. Or beeing refined to be more accurat, that it doesnt allready shatter if it hits a 4mm Construction steel stuff in front of a armor plate.


The overwhelming majority of base fuses function on the same basic mechanism, and this can be further simplified into a generic base fuse.

Gaijin has also set a precedent with generic APHE fuse mechanics when they (quite some time ago) set all APHE ammo to detonate after penetrating at least 20mm of armor and 0.5m into enemy vehicle interior.

Before that, it was very possible for APHE ammo to penetrate through very thin armor and not activate the fuse. It was also not exactly viable to shoot cupolas, as many shells would exit the cupola before exploding. Gaijin changed all APHE to a generic fuse type to “fix” this.

Fuse failure for APHE is not only possible to model, it’s one of the things I’d expect to be modeled if the devs want high accuracy to reality.


France after obtaining the long 75mm from the Panther then went on to remove HE-filler for future vehicles, like the AMX-13.

Then there is also the french 90mm cannons that can use the M82 APHE from the americans (like it does in game currently), with the historically accurate shell selection also uses the solid shot variant, in this case the T33

So thats German and American APHE shells being disregarded for solid shot. Thats not to say APHE cant work. Its just clear some dont think its worth the bother.


This isn’t true. Different APHE rounds have different fuse sensitivities and fuse delays.
20 mm MG 151 APHE has 3 mm sensitivity and 0.3 mm delay.
Italian 20 mm Breda Mod.35 APHE (called AP-I) has 9 mm sensitivity and 1.2 meter delay.
Even rounds fired from the same cannon can have different sensitivies and delays. For example, Russian 76 mm BR-350A (MD-5 fuze) has 14 mm sensitivity and 1.2 meter delay, but BR-350B (MD-8 fuze) has 14 mm sensitivity and 0.9 meter delay.
And larger APHE rounds end up having 19 mm sensitivity.

APHE rounds not fusing on very thin armor is still very much a thing. For example, Russian 152 mm APHE going straight through the M18, in one side and out the other.


Additionally, most cupola shots have nothing to do with the APHE fuse. What actually happens is that most cupolas are weak enough to be penetrated, but then strong enough to stop the round when it tries to go out the other side, which means the APHE gets stopped and explodes inside.

This is why cupolas like the SU-85M do not work reliably. These cupolas fuse the APHE, but are too thin to stop most rounds from leaving out the other side, and not big enough for the fuse delay to trigger inside, so the APHE ends up exploding outside. And again, not all APHE fuses are the same, as I mentioned previously.

SU-85M cupola vs 76 mm M62

Watch SU-85M Cupola | Streamable

Air fuzes were not affected by the ground fuze changes.
All ground APHE were standardized in some update, with only a few not following the rules.
If they are different, then it’s not working as intended.

the Italian 20 mm I mentioned is a ground auto cannon.

Yeah and all ground APHE has a minimum of 9mm of fuze sensitivity, except the French 47mm APHE, which was so bad that they forgot about it :D

Then it’s 14mm for calibers above 57mm and 19mm for calibers at 100mm and more.

Fuze delay of 1.2m should be standard for ground APHE.

That is correct, I had forgotten the exact fuse distance for the generic APHE fuse. I remember the old Panther gun would shoot holes through cupolas regularly, with the shell detonating outside the vehicle.

Now that we’ve established how ground weapons do indeed use a generic APHE fuse, my argument for generic fuse failures stands even stronger.

From 2014.

From 2016.

As can be seen the fuse delay on both is identical to how it is now (1.2 meters). The fuse sentivity is lower in 2014 and higher in 2016, but this doesn’t really matter as cupolas are generally thicker than either value.

In other words there is no reason at all for the Panther’s cannon to go through cupolas before, and not go through now.

Again, as I pointed out previously, and it was ignored, most cupola shots have nothing to do with fuse settings, with the only exception I know of being with the M60 cupola. In fact, the Panther’s cannons is now more likely to go through a cupola, as it has more penetration.

im more interested of the fact that 84pounder guns have 7.7s reload ingame aced. is it possible for it to be get buffed reload speed? afterall APDS is ass on strv 81 and cent mk 3

Reload time is iirc done on a balancing basis, unless it’s an autoloader (in this case it’s not) and since no one has reliable stats, and Gaijin no doubt believes they’re doing fine BR wise, that’d probably be out of the question.

It’s not a particularly relevant point to the discussion at hand, just something I mentioned that you have fixated on.

The point was gaijin has set a precedent with APHE by giving them all a generic fuse setting when previously they did not have one. Therefore it’s not a huge leap to add generic fuse failures according to a specific set of parameters.

Extremely common in American ammo, M82, M62 and M61 all showed this, Americans even used M61 unfuzed you’ll find it in Sherman manuals. Detonating early was a serious problem.

Germans tended to make their fuzes less sensitive, so they seriously would not detonate at all around half the time if not more. Though this means they were not detonating early.

1 Like

Do you happen to know much about the soviet ones? The only stuff I can find is unsourced talking about how they were as bad as the us shells.

Just wait until that guy finds out about the mk14 torpedo, entire books written about that disaster of a weapon.

Honestly this whole topic should be about ammunition failures and fuze locations in general. My biggest gripe with the game currently is HEAT-FS in particular fusing from the fins or main body of the charge hitting an object when in reality it requires the tip of the shell to impact a solid object. (goes for some types of HE as well)

i rarely have apds shatter.

Depends what APDS you’re using. 2nd gen and 3rd gen has no issues basically probably because Russia uses 2nd gen only. 1st gen it’s constant