Loomed / non-loomed bow? Min/Max PD? Sidearm?
I usually go with the following WPF and like it for short-mid range. I actually never aim for longer ranges.
Loomed with 5 PD -> ~ 135 +
Loomed with 6 PD -> min. 140
Loomed with 7/8 (max for tatar)/ 9 (max for horn) PD -> ~ 150
Not loomed I would go with around 140/50 at least.
Yumi Bow and 2slot bows need more wpf. It of course also depends on your skill.
Note that an Archer often goes with at least 18 AGI anyway. If you take more STR for more PD, you will have less WPF and you will still be fine with 5WM...
"Bad aim" also depends on you. Some Archers are fine with less wpf.