150mm KwK 44 L/38 and 170mm KwK 44 L/71

[PPoS]

Oh I'm sorry, forgive my ignorance. Well, so nobody has an educated guess on this matter ? Are there any modern 150mm or 170mm tank guns that could be used as guidance ?

[PanzerBob]

I have some guesses for you, but I'm at work and all my X Force stuff is at home. I'll post what I have come up with. I've "developed" a 10 cm KwK, 10.5 cm KwK for example plus a 105mm for the Allies.

Stay tuned, Out

[PatG]

AFAIR WWII HEAT penetration was around 100-300% of warhead diameter.

[Marek_Tucan]

Have my guesstimate only for 15cm SprGr.TS (APDS shell):

Mass (projectile + sabot): 15.7 kg
Mass (projectile): 11 kg (est.)
Velocity: 834 mps

Penetration 18 cm @ 0 hex.
Range 95 hexes

For HEAT, AFAIK German 15cm HEAT got some 21cm penetration.

[PanzerBob]

Here is a table on the stuff I've created. i atttached a Wp file of the table. Easier to read.[img]/threads/images/Graemlins/Bullets.gif[/img]

German WC ACC WS WH HEPEN HEK APPEN SBPEN SBRD HTPEN WPNRD

10cm KwK45 6 36 12 6 3 15 29 42 110 18 110

10.5cm Krupp 65 7 40 12 6 3 20 34 46 110 18 150

Allied

105mm RO L-2 7 34 12 6 3 15 32 48 110 11 130

[PPoS]

Alright thanks for the info. I've done some calculations myself which seems to be pretty authentic, however I cannot be sure since the 170mm KwK 44 was never built (and I don't have a clue if it was supposed to be L/71).

However, let's pretend that the Germans actually built a 170mm KwK 44 L/71 tank cannon. This is how it probably would look (in game-terms):
(and this is the version I'm using)
170mm KwK 44 L/71
Weapon Class: 7
Accuracy: 17
Weapon Size: 12 (maybe 13 would be better)
Warhead Size: 9
HE Pen: 4
HE Kill: 25
AP Pen: 31
AP Kill: 0
Sabot Pen: 41 (If the Germans got hold of more resources)
Sabot Range: 90 (Kinda guessed this one)
HEAT Pen: 36
Weapon Range: 140

The 150mm KwK 44 L/38 was actually already ingame!

A German 100mm KwK 45 L/60 would look something like this:

100mm KwK 45 L/60
Weapon Class: 6
Accuracy: 13
Weapon Size: 5
Warhead Size: 5
HE Pen: 3
HE Kill: 11
AP Pen: 16 (Less than the Soviet 100mm cause this one is has shorter barrel)
AP Kill: 0
Sabot Pen: 18 (If the Germans got hold of more resources)
Sabot Range: 70
HEAT Pen: 25 - 26 (Somewhere around those)
Weapon Range: 70

These are by no means any official data, but they are based on calculations of bore size, barrel length etc.

[Marek_Tucan]

Huh, just now noticed the lenght of 17cm gun - the barrel would have to be over 12 meters long, and I doubt it can be used in anything smaller than Ratte

For sabot on the new guns, you may try giving them APDS ammo, ie longer sabot ranges - Germans had some experience with APDS for long-range artillery and due to tungsten shortage tried to go that way also for AP projectiles, namely there was some 7.5cm design by the end of the war.

[PPoS]

Alright, never thought about that
Remember that this gun was supposed to be used with the E-100 chassis (almost like the Maus, or closer to a bigger Tiger II chassis). There are no sources about the 170mm KwK 44 except the name itself. Any ideas of barrel length ?