Please point out one time in history where gun registration didn't lead to confiscation.
Right here, right now, in the United States of America.
Because of the Constitution's protection of the RKBA, the only history that's relevant as far as I'm concerned is U.S. history. My understanding is that the following states and the District of Columbia currently require registration of some or all firearms: D.C., Hawaii (all firearms) New York (handguns only), California and Maryland (new residents only) and California, Connecticut, Hawaii, Maryland, New Jersey and New York (certain pre-ban assault rifles or 50 caliber rifles). A couple of these states require licensure in addition to registration.
As far as I can tell, these states' registration regimes have not led to confiscation of guns lawfully registered (outside of situations where the gunowner was adjudicated unfit to own guns for reasons unrelated to violation of registration/licensure requirements). Please provide examples to prove me wrong.