I've attached an AP Penetration Calculator in Excel format.
So you'll need a read/write version of MS Excel to use it.
EDIT:
The game designers have now provided an official penetration calculator in the 4.0 game update.
Go into your WinSPWW2 folder, and you will see a file called WW2_APCalc.exe
I've attached the Penetration Calculator to this post in letter and A4 size.
Be sure to read the notes:
Important calculator notes:
This is NOT an official SP release. Penetration tables cannot/have not been provided by the game designers.
This is a reverse engineered estimate of how the game engine calculates AP pen. It is usually accurate to within 1cm.
- Enter Max Pen, Max Range, Warhead Size and Target Range, to get a specific Penetration Result and 'Matrix'.
- Only need to enter Max Pen, Max Range and Warhead Size to get the Matrix results.
- Caution: Matrix results will give Pen values beyond the weapons max range.
- If you change the 'green' Matrix ranges, the calculator will adjust the Pen for the new range.
- The result is an estimate of the base penetration, so actual Pen will often be off by 1, occasionally by 2, rarely more.
- This calculator is only designed to be used with AP & sabot projectiles of warhead size 2,3,4,5.
- NB. Gunners may fire HE ammo if it's likely to get better Pen and they may fire HEAT ammo if available.
- Please note that British sabots have longer range, other nations shorter; this is not an error. The British WW2 sabot was the only 'true' sabot, and more effective than other nations.
- I encourage you to change the example weapons in the Guide to ones you often use or come across.
Credit: Thank you to my eldest son Jeremy, who wrote the Excel formula for me.
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