120mm

Chally 2: L30A1 120 mm rifled gun
Leopard 2: 120 mm Rheinmetall L/55 smoothbore gun
M1A2: 120 mm L/44 M256A1 smoothbore gun
C1 Ariete: 120 mm L44 smoothbore gun
Leclerc: GIAT CN120-26/52 120mm tank gun
Merkeva: 120 mm MG253 smoothbore gun
K2: 120 mm 55 caliber smoothbore gun (40 rounds)

Is 120mm the endgame?

Attached: Rheinmetall_120_mm_gun-Leoaprd_2E.jpg (3264x2448, 2.21M)

It seems that its good enough for today standards.

Attached: 1521531125751.jpg (400x328, 25K)

China has superior 125mm guns. Reminder that Rheinmetall proposed a 130mm gun for the next generation western tank because the 120mm is inferior to Chinese 125mm guns. And even if the west use the 130mm guns, they would still lose against Chinese super 155mm guns on tanks.

You're more than good enough for my standards, Apu

>China has superior 125mm guns

>Uh huh

Attached: 1556872355369.jpg (399x464, 52K)

Attached: 1544700737830.jpg (939x1646, 859K)

Attached: 1550891658271.jpg (720x405, 31K)

>Is 120mm the endgame?
No. Tank gun calibers will likely increase in the next few decades with the EU's MGCS and the US army DLP.

Rheinmetall had a functional 140mm ready in the 80s when the 120mm with 44 caliber length was standard.
Then Cold War ended and there were no real threads that justified the expenses of switching to a new gun AND new ammo.
So when Rheinmetall brought the 120mm L/55 they recycled lots of components that had been developed for the 140mm.
Nowadays with emerging chinks and a somewhat completely developed 120mm range the change to a new caliber seems interesting especially considering emerging threads from russia and china.
Fact is the west will be foced to upgrade and a 130mm would be more expensive. But it would be a much bigger upgrade with lots of room for further development than the 120mm.
But dont ask me why they seemilngly abandoned the 140mm idea. Perhaps better metallurgy made it possible to stay 10mm smaller.
>China has superior 125mm guns
China has the same medium pressure shit the russians have with the very same limitations. A bigger tank gun is much more than a larger barrel diameter you fucking chink.
Also TIANANMEN SQUARE WINNIE THE POOH LIBERTY FREEDOM OF SPEECH!

>China has the same medium pressure shit the russians have with the very same limitations. A bigger tank gun is much more than a larger barrel diameter you fucking chink.
This is what Americans want others to believe because they clearly have an inferior cannon. Protips, China leads in railgun innovation not to mention electrochemical thermal guns.

>2a46
>rail chink gun
Stay mad

Attached: Capture+_2018-06-06-09-17-17.png (647x552, 415K)

That photo is from a Leopardo 2E

But how much bigger can they get? What comes after 130 and 140mm? 155mm?

No.

Rheinmetal are working on a two stage process for tank guns. The L55A1 is now been developed which is a smoothbore L55 gun with a high pressure breach allowing 20% greater perfromance over the current L55 on Leopard. Challenger 2 looks set to be the first tank to get this as it has a similar footprint to the existing L55 (CR2 will be getting a turret redesign)

After that Rheinmetal have a 130mm gun which uses this new breach technology and pairs it with a larger calibre. There are currently no tanks planned with this gun as it's still maybe a decade away but it should improve performance by up to 50% over the existing 120mm L44 on Abrams.

Russia uses a 125mm gun in T14 but plans to use a 152mm gun at some point in the future.

120mm is the limit for manual loading. If we venture in the 130mm or 155mm range, tanks will probably need an autoloader.

Isn't she cute?

IMPLESSIVE

There was a time when people said that about 17 pounder guns in tanks.

17 pounder cartridges are similar in length to 105mm and 120mm cartridges.

and about half as wide and a fair bit lighter.

17 pounder rounds were smaller than others of the time period, it sounds like you are repeating a zombied myth.

>China has the same medium pressure shit the russians have with the very same limitations.

Patently false.

China's 125mm guns are the upscale of their own 120mm guns used by the earlier PTZ-89 120mm tank destroyer. The ZPT-98A is a 52 caliber 125mm gun that has higher muzzle velocity and chamber pressure than the 48 caliber 2A46M used by Russian tanks.

Attached: 26_184182_bef1b1150b4bf80.jpg (2500x1667, 593K)

>China's 125mm guns are the upscale of their own 120mm guns used by the earlier PTZ-89 120mm tank destroyer
No. The PTZ-89 used an indigenous copy of the L44, while the ZPT98 is similar to the Russian smoothbore, firing the same 2-part ammunition.

Same 2 part ammunition, but the penetrator rods are longer than comparable Russian ammo and the gun itself has highe chamber pressure than the 2A46M

Attached: Chinese APFSDS.png (1265x708, 739K)

Comparisson.

Attached: Chinese APFSDS vs Svinets lookalike.jpg (421x646, 44K)

The APFSDS rods are longer and thinner, achieving higher velocities as well.

Attached: DTW-125mm APFSDS.jpg (720x540, 57K)

Cool, but you said
>China's 125mm guns are the upscale of their own 120mm guns used by the earlier PTZ-89 120mm tank destroyer
Which is wrong.

Attached: vt.jpg (800x600, 85K)

It is, no doubt

Autoloaders already exist. What are the limits to caliber? If the next guns are 140, is it an eternal increase to 203mm and 16" or does caliber cap or begin reducing eventually?

>China's copy of a Russian 125mm gun that fires two piece ammunition is actually just an upscale of China's copy of a German 120mm gun that fires single piece ammunition

comparable ammo meaning what Russia exported to China

There is more to guns than just ammo design.

A AR wont suddenly become an AK when it gets rechambered for 7.62x39.

Russia never exported tanks and tank ammo to China, simply because of the Sino-Soviet Split.

Correct, China's copy of a 125mm Russian gun wouldn't become China's copy of a 120mm German gun if you rechambered it for 120mm single piece ammunition.

>Russia never exported arms to China

动态网自由门 天安門 天安门 法輪功 李洪志 Free Tibet 六四天安門事件 The Tiananmen Square protests of 1989 天安門大屠殺 The Tiananmen Square Massacre 反右派鬥爭 The Anti-Rightist Struggle 大躍進政策 The Great Leap Forward 文化大革命 The Great Proletarian Cultural Revolution 人權 Human Rights 民運 Democratization 自由 Freedom 獨立 Independence 多黨制 Multi-party system 台灣 臺灣 Taiwan Formosa 中華民國 Republic of China 西藏 土伯特 唐古特 Tibet 達賴喇嘛 Dalai Lama 法輪功 Falun Dafa 新疆維吾爾自治區 The Xinjiang Uyghur Autonomous Region 諾貝爾和平獎 Nobel Peace Prize 劉暁波 Liu Xiaobo 民主 言論 思想 反共 反革命 抗議 運動 騷亂 暴亂 騷擾 擾亂 抗暴 平反 維權 示威游行 李洪志 法輪大法 大法弟子 強制斷種 強制堕胎 民族淨化 人體實驗 肅清 胡耀邦 趙紫陽 魏京生 王丹 還政於民 和平演變 激流中國 北京之春 大紀元時報 九評論共産黨 獨裁 專制 壓制 統一 監視 鎮壓 迫害 侵略 掠奪 破壞 拷問 屠殺 活摘器官 誘拐 買賣人口 遊進 走私 毒品 賣淫 春畫 賭博 六合彩 天安門 天安门 法輪功 李洪志 Winnie the Pooh 劉曉波动态网自由门

>What are the limits to caliber?
Ammo Storage, Ammo handling and logistical burden per shell, recoil mitigation and turret ring sizes

>does caliber cap or begin reducing eventually
You have a gun big enough to do the job effectively and a little bigger just to be safe
Larger guns suit HEAT better but composite armour has hindered that - hence the focus on high velocity discarding sabot rounds
The size of Sabot rounds is limited mainly by ammo storage and gun chamber pressure
If you increase the volume of the chamber for a bigger round you have weakened the chamber walls, making a higher risk of chamber rupture
This is offset by increased mass reinforcing the chamber walls
Caliber increases lead to exponential weight run aways and you logistics then restricts that that

You faggots post this like it's some kind of ward against Chinese boogeymen. Also, you're not supposed to take the bait, retards.

fuck off, chang

Centurion: 105mm L7
>Leopard 1: 105mm L7
>Type 74: 105mm L7
>M48 Patton: 105mm L7 and 105mm M68
>Type 59-II: 105mm L7
>Pz-61: 105mm L7
>Pz-68: 105mm L7
>TAM: 105mm L7
>MCV: 105mm L7
>Type 05: 105mm L7
>Type 62G: 105mm L7
>Type 63A: 105mm L7
>Type 79: 105mm L7
>Type 88: 105mm L7
>M1 Abrams: 105mm M68
>M47 Patton: 105mm M68
>M60 Patton: 105mm M68
>M1128 MGS: 105mm M68
>K1 Type 88: 105mm M68
>Merkava I/II: 105mm M68

>Is 105mm the endgame?
What a stupid fucking thread.

PTZ-89 used an indigenous copy of the L44
No it’s not. It’s a scaled up royal ordinance L7

>No it’s not. It’s a scaled up royal ordinance L7
Wrong. The Chinese 120mm is smoothbore, not rifled.

Yes you’re right. My mistake

I read somewhere that this absolute unit's gun is more powerful than the Rheinmetall 120/44s. Could that be true?

Attached: M103M58.jpg (1200x900, 271K)