Question to Panzer IV G with 7,5-cm-KwK 40 L/43 und L/48

[KingstonDE]

Hi gents,

 

I watched on youtube a very good docu in english about Panzer IV G with 7,5-cm-KwK 40 L/43 and L/48. In this docu there was a stament that should be a mistake. It was that one of

the 7,5-cm-KwK 40 L/43 and L/48 had no ballistic curve up to 1000m with APHE, because it was so fast. Could this realy be possible? If yes should be a big advantage  in a Tank battle.

 

regards

 

Little_D

Edited July 28, 2018 by 1./JG2_Little_D

[=362nd_FS=RoflSeal]

Obviously no. Not even modern APFSDS that travels twice the speed of what the Pzgr 39 of the 75mm KwK 40 does and much lower drag has a ballistic curve as acceleration to the ground is always 9.81m/s^2.

Edited July 28, 2018 by RoflSeal

[mAIOR]

2 hours ago, RoflSeal said:

Obviously no. Not even modern APFSDS that travels twice the speed of what the Pzgr 39 of the 75mm KwK 40 does and much lower drag has a ballistic curve as acceleration to the ground is always 9.81m/s^2.

Well yes. And you are correct that all have a ballistic curve but the thing with fast projectiles is that they spend less time being impacted by gravity and therefore have shallower curves. 

[Skeleboners]

A cursory google search and pulling some numbers from Wikipedia (an always reliable source for specific data on historical minutiae like this, I'm sure we can all agree /s) shows that the characteristics of AP fired from both the KwK 40 and the Tiger I's KwK 36 are comparable enough that I'd figure they're comparable in ballistics. Obviously that's ignoring things like ballistic coefficient of the projectile, and a gross oversimplification considering the 7.5cm from the KwK 40 is both lighter and faster, but they're in the same ballpark as far as I can tell.

 

So, no, you'll still have to be superelevating the gun and doing good rangefinding with the Pz IV G.

[KingstonDE]

Hi gents,

 

thx for your answers. So it was a mistake from the docu or from me a mistake because of the language.

 

regards

 

Little_D

[303_Bies]

English docu was simply not specific enough. They wanted to tell about so called "point-blank range" for this cannon.

It means up to 1000 meters if you aim for the turret you would still hit the target (i.e. track).

Bullet from every cannon is subject to the laws of ballistics and gravity.

https://en.wikipedia.org/wiki/Point-blank_range

Edited July 30, 2018 by bies

[Jaws2002]

On 7/30/2018 at 5:25 AM, bies said:

English docu was simply not specific enough. They wanted to tell about so called "point-blank range" for this cannon.

It means up to 1000 meters if you aim for the turret you would still hit the target (i.e. track).

Bullet from every cannon is subject to the laws of ballistics and gravity.

https://en.wikipedia.org/wiki/Point-blank_range

 

 

Exactly this! Point blank range is what they were talking about.