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kwaigonegin

Colonel
This is what I have been taking about for about half a year. A 57mm auto cannon mounted on an IFV. No doubt that this will be used on ground targets. I wonder what that would do to a MBT, especially from the side.

I can tell you it would make a great fire support weapon.


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A 57 mm with the right AP rounds will totally destroy known armor types of ANY MBTs!
Even 30 mm depleted uranium rounds can easily penetrate Chobham at close range.
 

delft

Brigadier
This is what I have been taking about for about half a year. A 57mm auto cannon mounted on an IFV. No doubt that this will be used on ground targets. I wonder what that would do to a MBT, especially from the side.

I can tell you it would make a great fire support weapon.


Back to bottling my Grenache
I though this thing is about 60 years old and the wiki said I was right:
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Black Shark

Junior Member
A 57 mm with the right AP rounds will totally destroy known armor types of ANY MBTs!
Even 30 mm depleted uranium rounds can easily penetrate Chobham at close range.

No, not composite armor except the upper glacis from a 60-90° angle to armor since all upper glacis of the hull are very thin and rely only on the angle to make their armor thick. 25-30mm AP rounds can penetrate roof, side and rear armor at some areas, 57mm APCPC,API, APDS or APFSDS will penetrate any existing tank side armor turret or hull from any ranges, they have less than 90mm Armor +25mm sideskirts, most tanks have less than 50mm side armor of hull + sideskirts that is not even near enough to stop a 40mm APFSDS not to mention that you can just use a simple AP round of 57mm. The PAK (Panzerabwehrkanone) during WW2 where the most effecient weapons among 45-57mm in Soviet Union they were called the Golden 45 and the 57 is even more powerful, no side armor of any MBT will hold it even ad disadvantage angles.
 

kwaigonegin

Colonel
No, not composite armor except the upper glacis from a 60-90° angle to armor since all upper glacis of the hull are very thin and rely only on the angle to make their armor thick. 25-30mm AP rounds can penetrate roof, side and rear armor at some areas, 57mm APCPC,API, APDS or APFSDS will penetrate any existing tank side armor turret or hull from any ranges, they have less than 90mm Armor +25mm sideskirts, most tanks have less than 50mm side armor of hull + sideskirts that is not even near enough to stop a 40mm APFSDS not to mention that you can just use a simple AP round of 57mm. The PAK (Panzerabwehrkanone) during WW2 where the most effecient weapons among 45-57mm in Soviet Union they were called the Golden 45 and the 57 is even more powerful, no side armor of any MBT will hold it even ad disadvantage angles.

I'm confuse so are you saying it can or can't ? lol
I'm saying a 57 mm auto cannon would totally destroy a tank. The trick is multiple rounds. I'll admit I'm far from a lland warfare expert however I know that modern armor especially those with ceramic, carbon and other alloy blend layering or honeycomb while being able to withstand a lot of pressure, they also quickly lose their strength and integrity when hit on the same spot multiple times.
Each successive round hitting the same spot over and over would eventually penetrate. It's just the law of nature.
I have never heard of a tank armor defeating 30 mm DUs from a GAU 8 before. It MAY defeat a couple of rounds but not 100 rounds hitting within a sq ft for example.
 

thunderchief

Senior Member
l
I'm saying a 57 mm auto cannon would totally destroy a tank. The trick is multiple rounds. I'll admit I'm far from a lland warfare expert however I know that modern armor especially those with ceramic, carbon and other alloy blend layering or honeycomb while being able to withstand a lot of pressure, they also quickly lose their strength and integrity when hit on the same spot multiple times.

No, it will not totally destroy a tank if it doesn't penetrate , even with multiple hits . This is the reason why tank-building countries opt for large caliber guns instead of fast firing auto cannons . Auto cannons are usable in aircraft like A-10, attacking thin top of the tank , but not in long range tank vs tank combat , in most cases facing heavily armored front arc .
 

kwaigonegin

Colonel
No, it will not totally destroy a tank if it doesn't penetrate , even with multiple hits . This is the reason why tank-building countries opt for large caliber guns instead of fast firing auto cannons . Auto cannons are usable in aircraft like A-10, attacking thin top of the tank , but not in long range tank vs tank combat , in most cases facing heavily armored front arc .

I dunno.. we may have to agree to disagree. I am 99.9% sure 57MM auto cannon with KE penetrators would destroy known tanks regardless of glacis, or direction of the incoming rounds.
 

thunderchief

Senior Member
I dunno.. we may have to agree to disagree. I am 99.9% sure 57MM auto cannon with KE penetrators would destroy known tanks regardless of glacis, or direction of the incoming rounds.

Of course not . 57 mm caliber is not enough even for front glaces and front part of turret of T-55 tank . It contains much less propellant then 120 mm round . Sabot is therefore smaller, and KE penetrator shorter and lighter . As such, it hold much less kinetic energy and loses speed much faster then its big brother . Tank armor is made of various composite and steel layers sandwiched together , and they hold up pretty nicely even in event of multiple hits .
 

Miragedriver

Brigadier
Russia to expand ties with Latin American integration associations — foreign minister

"Our relations have been developing dynamically in the recent years," Russian Foreign Minister Sergei Lavrov said, opening talks with his visiting counterpart from El Salvador Hugo Martinez Bonilla

MOSCOW, June 9. /TASS/. Russia plans to expand its ties with Latin American integration associations, Russian Foreign Minister Sergei Lavrov said on Tuesday, opening talks with his visiting counterpart from El Salvador Hugo Martinez Bonilla.

"Our relations have been developing dynamically in the recent years and we are satisfied with that," Lavrov said. "We have marked the 30th anniversary of diplomatic relations between our countries. El Salvador’s embassy has been opened in Moscow and we have sent our diplomatic representative to El Salvador."

According to the Russian minister, the Russia-El Salvador visa-free travel agreement was coming into force. "We commend your decision to open an office of a honorary consul in St. Petersburg," he said. "We are thankful to you for sending your deputy to Havana conference on cooperation between the former Soviet Union and Latin American countries during World War II." The Russian minister hailed active contacts between the two countries’ foreign ministries and parliaments.

"A major task is to use the good level of political relations to expand trade and economic cooperation," Lavrov said. "We plan to exchange views on international and regional affairs, on prospects for expanding relations between Russia and Latin American integration associations."

Martinez Bonilla, in turn, said that since his first visit to Russia dialogue between the two countries had grown more dynamic. "But we still have a lot of goals yet to be attained," he said. "We are interested in promoting relations in trade and tourism. The visa-free travel agreement will give an impetus in the sphere of trade, investments and tourism."



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