Yes. You have attempted to make its combat RANGE its combat RADIUS. A combat range of 1,885 miles means the entire distance it can fly at economical power settings on a combat mission. Once things like take-off, formation, climb to altitude (not that important for a Mossie mission), and reserves for combat and emergencies, you are left with a combat radius a fraction of the maximum range (I would guess about 600 miles or so). The ferry range of a plane is usually a few hundred miles greater than the combat range since a ferry mission is flown at best speed an altitude, minus extra weight (like ammo or bombs), and without the need to been in combat reserves.