Surely removing hit-scan that worked fine since launch would bring balance, right? right?

Metric system is pretty strait forward. here’s a pretty basic demo, elementary school grade explanation ( and the ones we most use daily ) this is for distances.
Let’s take 1 meter as basic measurement .
1 m = 3,28084 foot, feet ? nevermind…

How much is a meter ?
easy just add 3.386 inches ( whatever that is) to a yard and you have 1 meter

mm - cm - dm - m - Dam - Hm - Km

So.

1m ( meter ) has 10 dm ( decimetres)
1 m ( meter) has 100 cm ( centimetres )
1m has 1000 mm ( millimetres )

1 Dam ( decametre ) = 10 metres
1 Hm ( Hectometre ) = 100 metres
1 KM ( kilometre ) = 1000 metres

same goes for weight measurements, liquids and so on .
Basically you only have to multiply or divide by ten each time you move sideways or up and down.
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