I just tried save and load more than 100 times just to test my crit chance. Because it felt way too often to have a none-crit hit while the tooltip shows 80%.
So i found a mob and safe right before i shot; then repeat this around 150 times ( was aiming for 200 but i gave up)
the crit chance was around 44%, instead of 80%. that is huge difference.....
some may claim its just rng, but 150 should be a large enough sample size; an acceptable margin should be around 75~85% crit even if we consider RNG.
using single shot rifle BTW.