As the title says.
For what reason the BR-540B on the 2S19 has a initial velocity of 610m/s, compared to the 760m/s of the Object 268? This affects the penetration significantly. Its so bad, that you cant pen the Tiger 2 H with it!
175mm pen vs 239mm of pen. Its about on par with the I/SU-152, which is a WW2 tank at 4.0/4.7, which has 600m/s velocity and 171mm of pen. The 2S19 is bad enough, and having this round weaker for no reasons is baffling. Not only it should not be weaker, but since the barrel is much longer it should have higher velocity than the Object 268!
One has made to counter tanks and the other to counter structures.
But… its literally the same round. And the Object 268 is a WW2/post-WW2 era tank and gun. The 2S19 comes about 40 years later.
Same round different purposes. Mostly of the ammunition penetration power comes from the charger it uses. Bit sure, if the 2S19M1/M2 recieves this buff I’m not against considering is just a gigantic barn house.
The breach volume of the 2A64 gun is way bigger than the one of the ML-20, which is on the ISU-152. Which is obvious when comparing the range of the guns and their length.
Tbh I was thinking the same: the breach is bigger and the gun is much longer than the su-152’s, which doesn’t make sense just to add 10m/s of velocity and 4 mm of pen. The APHE and HE on 2s19 weigh the same, so why do they have different velocities?
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The Br540 is a very old shell with different propellants on different guns. The obj 268 uses a higher energy propellant, but the 2s19 still uses the same propellant as the 2s3m and isu152, so even if there is a longer barrel , there is no more improvement on penetration. However, from the theory and some information I have found, it is possible to use the same advanced propellant as the 3of45. But I don’t know why it’s not distributed.
I tried finding information, but there is none for the BR-540, like at all.
It is entirely possible the round is simply not in use or have not been in use at all with the 2S19.
But even if that is the case, it can be brought to Obj 268 level for the 2S19 for balancing reasons. Because the 2S19 is absolutely terrible. 2S1 and 2S3 are far better than the 2S19.
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You can find this information in the Grua Index and 2A65 operating manual. The 2s19 is compatible with this older ammunition, but there is no mention of whether the 4zh61 propellant can be used to fire the Br540 (the
same porpellant that 3of45 use). The operating manuals, Jane’s information, and some published intelligence information indicate that it can be used.After all, if the advanced 4zh61 propellant is used, the range can reach 24 km, and if the old 54-G-540 propellant is used, the range can only reach 17 km.There’s no reason can’t use advanced porpellant .So that for real or balance ,the br 540 on 2s19 should have higher muzzle velocity.
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