You can always turn a variable scope down.
I have had 4.5-14x40, 4-16x50, 6.5-20x50 & 8.5-25x50 scopes and for ammo testing and trying to shoot the smallest groups I alaways use maximum magnification to optimise precision. In actual fleld use I set the scope to the same power as my binoculars 8/10x so when I've spotted my intended quarry moving from binoculars to scope gives a similar image.
Anschutz 1427 .22LR Nikon Buckmaster SF 4.5-14x40, A-TEC Mod, Tikka M595 222Rem, Leupold 6.5-20x40LR, Howa 1500 APC 308Win, Nikko Diamond 6-24x50 FFP, wildcat Evolution, Sauer 202 243Win, Leupold 4.5-14x50LR, wildcat Evolution.