Kentucky Windage
Holding off the target by eye and experience to correct for wind or drop, instead of dialing the turret or using a reticle mark.
Kentucky windage is the old practice of correcting a shot purely by judgment, shifting your point of aim into the wind or above the target by feel rather than measuring the offset. The name nods to frontier marksmen who had no adjustable optics and learned to read conditions and apply a mental holdoff. It covers both wind and elevation, though the term most often refers to the windage correction a shooter estimates on the fly.
The method is fast and needs no equipment, which makes it useful for close, time-pressured shots or as a fallback when a turret fails. Its weakness is repeatability, since an eyeballed hold is hard to record and harder to reproduce than a measured holdover on a graduated reticle. Strong wind reading skill is what separates an educated Kentucky hold from a guess.