About weakpoints

[Imp]

Exact wording is in the game guide but the chance of hitting a weak spot are based on range & your rangefinder. A laser rangefinder has a chance of a critical hit at far greater range than a WWII one.
Unsure but the additional accuracy from being a consecutive shot at the same target may help, I have certainly had rare 20+ over penetration hits.

Also need to remember game gives minor damage shots BMP 2 immobilising a Challenger comes to mind & I have lost weapons to low AP hits before though its not as frequent as WWII probably due to the larger diffrence between armor & the AP.