What did I do wrong? Spool takes 170m/0.2mm, but it is already overspooled with about 50m/0.2mm braided line.

I kept it tense and all, but it looks like there are easily 100m of line left, while the spool is already filled to the max.

Shouldn‘t it take about 130-150m of the braided line?

I didn‘t wet it, maybe that‘s why? Any help is appreciated, thank you.