Where were they found?! Grief!@Hockeycowboy the Silver Scrolls, the oldest biblical writing found, dates to about 586 BC. The Bible appears to have been written from the mid 600's BC to roughly 100 AD, much closer to my time range than yours.
Ketef Hinnom - Wikipedia
They were found in tombs used by the Hebrews, before the destruction by Babylon! That dates them prior to Jerusalem’s temporary demise!
Indeed, the script used was dated to the 7th century bce, during the First Temple period.
Anyway, I subscribe to Jerusalem’s destruction by Nebuchadnezzar in 607 bce.
So the scrolls were in existence before that event.
This is all moot, anyhow...dating a copy, has no bearing on when the original was written!
Since all the Israelite kings were required to copy the Mosaic Law, copies that are more ancient will be found, I suspect. (To your chagrin, no doubt.)
(‘Heaven forbid, the Bible be accurate. We can’t let that happen!’)