great mod but one question

[McHrozni]

Check it yourself.

I think I found the sticking point. Here it is:
Arrow: 3mm radius

Sure, the shaft of an arrow is around 3mm thick. But the head of the arrow is usually wider, even a bodkin point would be almost 10mm thick (3/8 of an inch, slightly more than 9,5mm). While it certanly is possible to make a smaller arrowhead, those won't do much more than pierce the armor either - the lower the radius (calibre) the smaller the chance of a serious wound being inflicted. I'd say that the bodkin points were close to the minimum radius required to make the wounds they inflicted serious. The square of the radius is in the equation of the needed thickness, and this would correspond to approximately 1/10th penetration capacity - a 1,5mm thick steel plate should defeat the projectile.

This would also mean that an arrow would have a penetration power much closer to the value of a javelin, noted below - same energy, similar radius.

Secondly, this value is probably calculated for a heavy bow at pont blank range.

Lastly, this would fit well with anecdotal evidence of plate mail withstanding voleys of arrows and making archers obsolete without requiring that armor being made of as-yet-unknown high strength low weight materials.

It's called critical thinking. Again, how many bows will punch straight through a church bell?

McHrozni