https://matteocampagna.com/en/registry/competition/badly-adjusted-sight Changes to this claim in Matteo Campagna's evidence registry: its status, its year-by-year history, revisions of the page. en-gb https://matteocampagna.com/en/registry/competition/badly-adjusted-sightOne study has tried to put a number on these points, using the groups shot at a World Cup and at the World Championships: bringing each archer's group back to the centre of the target would gain about three points a head on average, with cases of around twenty points in men's recurve and a higher share of off-centre groups among the women. Two smaller measurements also describe groups that do not land on the centre: in eighteen archers at eighteen metres almost two arrows in three finished in the upper half of the target, and in twenty-nine recurve archers of three levels the average offset was almost entirely horizontal at intermediate level, while even the nine high-level archers had their mean impact slightly down and left, in an abstract that does not give the unit of measurement. The weak point is always the same: nobody has measured the sight settings, so an off-centre group can be explained by the sight or by the archer. That the margin is real is suggested by a follow-up with no control group, where six Australian archers went from seventeen potential points lost to three after being shown where their groups fell. A 2020 rereading of the same targets gives the loss division by division, from 1.35 points over 36 arrows in men's compound to 2.92 in women's recurve, under half a point for the top twenty men's compound archers, and warns that it is probably an underestimate, because archers were correcting their sights during the distance.claim:mirino-regolato-male:revision:2026-07-28:2Tue, 28 Jul 2026 08:00:00 GMT https://matteocampagna.com/en/registry/competition/badly-adjusted-sight#storiaThe same researcher returns to the photographs of the 2013 targets with a model: at fifty metres off-centre groups cost on average between 1.35 and 2.92 points over 36 arrows depending on the division, under half a point for the top twenty men's compound archers, and the loss grows with the square of the offset. These are the same data as in 2014 and nobody has yet recorded the sight settings: the status stays reported.claim:mirino-regolato-male:status_change:2026-06-18:riportatoThu, 18 Jun 2026 08:00:00 GMT https://matteocampagna.com/en/registry/competition/badly-adjusted-sightclaim:mirino-regolato-male:new_claim:2026-02-18:non_studiatoWed, 18 Feb 2026 08:00:00 GMT