I'm sharing a .jar to calculate the necessary amount of explosives to a given radius with the expanded rules found in Arsenal. It's really self explanatory. Hope it helps

Version 2.0 now available. Added the Damage Value of the explosive.

This is how you know that the game rules are too complicated.

hehe, not really. GURPS easily surpasses Shadowrun in complexity. Have you ever taken a look at GURPS Vehicles, you need a freaking scientific calculator to keep track of mass, volume, length, widht, etc. of your vehicles.
With this the game flows easily whenever you want to use explosives, 10 seconds and you have a result, instead of going through the books to find the rules, then making the calculation, etc.
I hope it helps your demo expert player

Neat. I've been working on building something similar for Android.

Nice work! Very usefull...

Version 3.0 is now up.
Mind you that I asked some friends for the deustch and française translations, but they are not native speakers and definitely not shadowrun players. Any translation that might be off, please send me a PM.