No, the mod providing the RAOBF should show it's own reticule to match the speed/size scale on the movable ring. That should effectively be a mili- or centi-radian scale. (I guess it depends on the mod, screen resolution and the zoom factors chosen for it.)
The RAOBF mods were first developed in SH3. Then were ported to SH4 and SH5. They work without limitations.
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