HSTV-L has an undeveloped ammo

Now it’s slightly better than 2S38 (at least the RDF is). They still need a better round if you want them to constantly face 2A7Vs and T-90M side armour.
If it gets Delta 6, I can see it being 12.0, but it’s still not that good for 11.7, even with the reload buff.
It could really be 11.3, and making the 2S38 10.7 would make more sense.

In no world should it be a whole 1.3 BR higher than the 2S38, let alone any higher.

Well Spookston seem to have just been confused by the late sources calling the ADMAG the XM274 so he didn’t put 2 and 2 together that the XM274 was a new gun not the one on HSTV-L and RDF-LT. The result being that he used contradicting sources taking the speed and weight from the earlier projectile and marrying them with the penetration of the later version which can make sense on the face of it, higher speed means better penetration in general.

It just so happens I was looking into the MBT-70 XM578/579 APFSDS and some of the sources overlapped with the HSTV-L and contradicted somewhat Spookstons view so I decided to read everything I could get my hands on a week ago so I could hopefully solve my unease, that is when I realized the Guns where different.

Long story short in 1972 the ACVT program wanted to develop an antitank machine gun, the MC-AAAC, they believed that a 60mm conventional round would do the trick, by exploiting very high length to diameter projectiles for the time, 18-21 to 1 ratio, the contemporary XM579 was a 13 to 1 projectile (not rod). And they succeed in creating 60mm caliber APFSDS that comes close to the performance of the 28mm XM774 in terms of the speed at which the projectile can defeat NATO Heavy targets. But it doesn’t have the range wanted so they require a 75mm system. Queue 75mm ADMAG. The result is they can now get much better velocity the trade of is a slightly heavier but shorter projectile this gets them up to 80% of XM774 performance and this gun is put on the test vehicles showing the viability. But 80% XM774 is not seen as enough for the future, the US Army wants more, so then XM274 is developed, the chamber is lengthened to again increase the L/D and the weight which makes for a slower projectile but increased performance, it is now on par with M774.

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Thanks for the information, I’ll look more into this.

Make the 2s38 reliably bounce APFSDS, and remove the stupid side floats, and then bam 11.7

Until then, I never see that happening.

Pretty much at this point

The hstvl has the speed, survivability, size, and pen over the 2s38.

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The 2S38 is as boxy as a Cardboard box, why do you want to artificially make it bounce APFSDS?!?!?!?!

Removing the floats won’t change much, look at the BMP-3 which is the same hull and the new BMD-4M that uses the same UTD-29 engine and transmission.

They all have terrible acceleration, it barely beats the Turms-T to 50kph and loses to the T-90A

BMD-4M has 35hp per ton compared to the BMD-4 with 33 but it feels so much slower, same for the 2S25M and the normal one

The weight increase of the 2S38 actually means it loses to the turms in the tests i’ve made.

There has to be something wrong with this powerpack the gear ratios or something, i haven’t noticed something similar with any other vehicle.

Because you all want it to be 11.7

So give it -17 gun depression, a better round, and better survivability and it will become 11.7

But that’s not accurate to the vehicle now is it?

Because, it’s gonna go up in BR?

What do we know about the ADMAG ammunition then?

From what i understand XM-885 is for the XM274 only then.

Nice generalization! Even though I haven’t said anything about the 2S38.

So a light tank is worse than already slow MBT ?
That looks terrible.

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Let’s be honest, everyone compares the HSTVL and the 2s38.

So yes generalization is warranted

It makes no sense, it has the same HP/t as the RDF yet it accelerates so much slower.

The BMP-3 hull also looses so much speed when turning

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Certified bias moment.

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Nothing for the most part, there is no known ammo made for the ADMAG bar some supposed proof of concept rounds and some saying that XM885 and such are usable by the ADMAG, which STGN states to not be the case.

So per STGN’s statement our tanks would be non-functional which is not a tenable outcome for WT given both vehicles exist in game already.

Given that the vehicles are already functional in game and it would not be a stretch at all for the proper XM274 to be fitted to the RDF/LT / HSTV-L and such a change would fall into line with how Gaijin treats vehicles, with some, like the Yak-141 getting changes to make a testbed functional, this situation is overall a non-issue.

Gaijin has no reason to not keep the gun as the XM274 as the ADMAG never had the ability IRL to make a functional tank.

Pretty much this.

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Not really when the person your responding too hasn’t clarified their position.

But keep generalizing, clearly since I’m in a thread talking about an American vehicle so I must be a hardcore american main ODL clickbate spammer, that only wants American vehicles to be op.

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Here’s a 132x400mm shell casing.

Can’t be a 19" Shell for XM-274.

Once again though, as shown, that is an inert example round, there is no known functional sabot for the gun like XM885.

Edit: The round in the picture is also not a early make 75mm as it has the lipped top case, that is a XM274 round.

image
Per ARES themselves, the “early make 75mm round for the advanced development gun” is the beige round on the right without an upper lip, the XM274’s round is on the left, and is identical to the round being measured here. The black cased rounds are 90mm examples.

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I would agree but myself and Calvin had already discussed this exact photo saying the same thing.

If black is 90mm, and striped is XM-274 that must mean the smaller beige is 75mm AD but if your compare their lengths and widths, none of them add up to any of their known dimensions.

While in the Stoner tapes themselves, Black is said to be THE 90mm CTA casing but we have photos of the black casing that is known to be XM885.

And the 2S38 has the vast amount of ammo, much better gun elevation, gen 2 thermals, and a 0.5s reload instead of a 1.0s reload.

Generally the HSTV-L is better, but it’s not that much better compared to the 2S38.
0.7 BR difference is reasonable, and a 1.0 BR difference at most.
1.3 BR difference is completetly stupid, especially if you’re asking for more than that.