So you see an enemy far off and hit vats, but to your disappointment you only have a 10% chance to hit, and your critical meter is empty...well, exit vats, immediately aim down sights/scope and fire, you will be aimed on the target and get a hit..
This also works inside as well for tough to spot enemies with obstacles all around..
Just something for ya to play around with and try out..
60 percent of the time it works every time.