How is the hit chance of grenades calculated?

[overly excitable young man]

So it happened again in Underrail. I'm pretty sure it's the same in AoD, Wasteland 2 and Arcanum.
Even though i haven't skilled throwing at all the grenades hit the enemies far more often than 23%.
The 23% must be the chance to throw at the targeted tile.
But how great is the chance that i throw the grenade in the tile before me and die?
Does anybody know?

 

[lukaszek]

deterministic system > RNG

 

[Falksi]

Best shit song ever.........

 

[Horton]

Best shit song ever.........

Thanks for sharing

 

[overly excitable young man]

https://www.underrail.com/wiki/index.php?title=Throwing

Grenades cannot land more than 3 tiles away from their targeted location with imprecise throws. Grenades can only reach 90% precision, unlike targeted attacks which are limited to a maximum of 95% precision. However, grenades have 100% precision when thrown to a tile adjacent to the thrower. See Precision for details on precision mechanics.

The range of grenades is limited to 10 tiles. An effective throwing skill of 123 is needed to have the maximum precision of 90% on the 10th tile.

Thanks a lot. That explains it.