"So little pains do the vulgar take in the investigation of truth, accepting readily the first story that comes to hand." Thucydides 1.20.3
Among the community of nations, Pakistan today stands out on one hand as a petty thug brandishing a dangerous weapon, and at other times as a concubine, sleeping with anyone willing to pay for her expensive tastes. ~ Tarek Fatah
Son, there are a lot of other parameters other than KE involved here. (Example - material of penetrator, think of firing a wood projectile with same weight and velocity as a DU projectile at an armor plate).
Take the cue, and let the pro's speak. They know what they are talking about, you don't.
Everyone has opinions, only some count.
oh dear , 10 9 8 7 6 5 4 ....
"When England was a kingdom, we had a king.
When we were an empire, we had an emperor.
Now we're a country
Not to totally throw another wrench into this, but penetration is not just number of joules or foot pounds. There's also something called frontal desnsity to contend with. It's the difference between a hammer and an ice pick. A hammer that is not very dense will smash into something and release all it's energy, but have low penetration. An ice pick will penetrate through something releasing all it's energy to a single point and punching straight through. To gun folks, it's why a 5.7 round with less energy than a 45 ACP or 9mm can go through body armor while the latter cannot. So a larger round does not constitute greater penetration. A long thin and very dense object at high velocity can punch through more than something that is very large and not very dense going at a slower speed EVEN IF THAT OBJECT HAS GREATER ENERGY BY A FACTOR OF 2!
So energy isn't exactly the key factor to penetration.
125mm 2A46 family of guns and its Chinese clones use 2 piece ammunition. This limits projectile leangth and this has a direct bearing on projectile weight for KE rounds.
Weight is far more important for imparted energy than velocity.
an 8.3 kg projectile traveling at 1555m/s is far more energetic than a 4kg projectile traveling at 1750m/s
I think you mean momentum (mv), ie as in the Law of the Conservation of Momentum.
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