Aiming with one eye closed gives tighter groups than with both eyes open ยท What changed https://matteocampagna.com/en/registry/technique/aiming-with-one-eye-closed Changes to this claim in Matteo Campagna's evidence registry: its status, its year-by-year history, revisions of the page. en-gb "Aiming with one eye closed gives tighter groups than with both eyes open" added to the registry as Contestedhttps://matteocampagna.com/en/registry/technique/aiming-with-one-eye-closedclaim:occhio-chiuso-gruppi:new_claim:2026-01-20:contestatoTue, 20 Jan 2026 08:00:00 GMT