If you actually search for live firing of BMP-2s you’ll find they’re pretty much always firing single shots or in low firerate.
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Testing dispersion and range to generate a table for sight correction does not require bursts or high fire rates (especially considering there is ample evidence of high fire rates having poor dispersion with this cannon)
It does, it’s an autocanon. What’s the point of including this table in the manual if it is not for an autofire (primary firing mode). I still don’t understand where this myth comes from. Oooo look barrel wobbles during reciprocation (look at it’s construction), it must be sooo unprecise.
HEAT jets can go for 3+ meters after penetration.
Do they have any real power after punching through a pretty thick roof armor? Not really. You can find what this autoloader coverplate really is, if you just google it.
If you actually search for live firing of BMP-2s you’ll find they’re pretty much always firing single shots or in low firerate.
Bruh. I don’t even know what to add. Sure thing dude.
You seem to not know a lot of things for the amount you’re talking.
550rpm is not the primary firing mode.
Here is 2A42 firing at the low firerate.
Some oscillation is normal. The amount visible on BMPT is not and would not be permissible by any BMP-2 field manual.
It’s like 40mm thick. In case you’re unfamiliar with shaped charges (which seems to be the case), they do this after exploding
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550rpm is not the primary firing mode.
What is it then? Enlighten me please.
Some oscillation is normal. The amount visible on BMPT is not and would not be permissible by any BMP-2 field manual.
Look at it’s construction. It’s not really alligned by anything during recoil. When cartridge actually fires it’s pretty steady.
It’s like 40mm thick. In case you’re unfamiliar with shaped charges (which seems to be the case), they do this after exploding
Yea, let’s compare hand grenade to a nuclear bomb. How come distance is still the main mean of protection aganist shaped charges?
Then why is the accuracy demonstrably poor?
It’s not.
That is the jet produced by an RPG-7 detonation.
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Pencil thin barrels do not react well to fully automatic fire at high rates, why do you think it’s a myth that the autocannon has poor dispersion at max RPM? Proper recoil compensation systems are totally linear and do not have barrel movement in the axis perpendicular to the bore.
We have images of Ka-52s that have damaged themselves with their gun. We have videos of BMPTs firing that show the barrel whipping around and video of the dispersion in full auto.
We have proof that heavy barrels and low firerates are mechanically more accurate than pencil profile barrels and high fire rates. You cannot break established rules of physics. It is unreasonable that BMPT has dispersion of low firerate when firing at 550 rpm. NATO autocannons fire slower and are built heavier but their dispersion is worse despite being built for precision.
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As an addition to this, if the accuracy was mysteriously just fine at max RPM, why even have the option to fire single rounds or at 200rpm? Why do it all the time?
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Also shouldn’t forget that versions of that cannon or derivatives that are rebuilt for accuracy have lower firerates, heavy barrel reinforcement or both.
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Because you decided so. I actually asked why the high mode is even there if a cannon can’t hit anything even when firing slow (by your own logic).
Then why is the accuracy demonstrably poor?
Oh look a wobbly cannon. I literally gave you a firing table for 2A42. Nuh uh is not an argument, if you have something factually significant then show it, please.
It’s not.
What is then, enlighten me please. Why tf dudes out there welding a goddamn mansions above their vehicles? Are they stupid?
Because the gun is not built for accuracy at long range and volume of fire is more than enough against an infantry threat.
Which is almost certainly for single shots are demonstrably incorrect, watch any footage of these things firing.
This is a long, long explanation with a significant amount of historical context but can be summed up to
- placebo, crews love thinking their armour is better. Same logic behind sandbag addon protection in WW2.
- obstructs the weak points. Drone pilots tend to be quite skilled these days and can effectively target weaker points in the vehicle. If the entire thing is a box it eliminates that capability.
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Yea, let’s refute an actual data, because you have a feeling. I’m not doubting that a heavy slower-firing etc. cannon will have better accuracy. My point is that 2A42 accuracy is good enough, not that it’s a death laser.
The accuracy in low firerate is fine. The problem is that it doesn’t get worse in high firerate mode.
We have no firing trials for 550 RPM mode of that gun? There should be ample documentation of that in Soviet archives.
if the accuracy was mysteriously just fine at max RPM
Half a metre at a kilometre (which is not a very big distance, btw) is good enough for most of its purposes, sure. But sometimes you need more control, to not overheat your cannon, to not waste an entire belt of ammunition and maybe, you even need to hit something more precise than a 1 metre circle at 1 km.
Because the gun is not built for accuracy at long range and volume of fire is more than enough against an infantry threat.
You know it still needs to hit pretty close to it’s target.
This is a long, long explanation with a significant amount of historical context but can be summed up to
Whatever dude, facts speak for themselves. It takes a lot to knock out a vehicle modified in such a way with an RPG-7V based drones, compared to it’s regular variant.
Which it does as far as infantry is concerned.
I literally listed the reasons right there.
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Sure is for a vehicle with no laser rangefinder.
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Also shouldn’t forget that versions of that cannon or derivatives that are rebuilt for accuracy have lower firerates, heavy barrel reinforcement or both.
Yea. You know the 2A72. It was surely built for better accuracy. Oh no, wait. It’s the fact that a BTR-82 weighs like half of what BMP-2 is. And that the BTR is a wheeled vehicle, it’s suspension doesn’t really like three times the recoil.
Is that why the BTR-90 which weighs about the same and is also wheeled uses 2A42? Your logic is flawed.
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We have no firing trials for 550 RPM mode of that gun? There should be ample documentation of that in Soviet archives.
Keep telling yourself that the user manual for automatic cannon that features two automatic modes contains ballistics info for only one of them.