In Logan, we see that

the Logan clone is killed by X-23 with an Adamantium bullet to the head.

But in previous Wolverine movies,

• X-Men Origins: Wolverine Adamantium bullets did not kill Wolverine
• The Wolverine the Silver Samurai had to have super heated Adamantium to damage Logan's Adamantium skeleton.

So is the canon from Logan rewriting the nature of Adamantium and thus overwriting previous canon information about Adamantium?