[Campion]

C-14 testing is most accurate for things that have been sealed away. The shroud hasn't been. There are reasons to suspect that the repairs after the fire in 1532 may have compromised the carbon dating.

Additionally, nobody has come up with a viable explanation for how an artist in the 13th century came up with a method to impress an anatomically perfect image of a crucified man onto the cloth. It's not painted on.

[Fresh Wind]

“New test dates Shroud of Turin to era of Christ”

https://www.usatoday.com/story/news/world/2013/03/30/shroud-turin-display/2038295/