Corrected entry: In the second X-men movie Logan is shot to the head by a police with a normal gun. It penetrate his skull and he falls to the ground. Later the bullet grows out from his head. In Wolverine the only way to penetrate his skull is by an adamantium bullet. Which is a obvious error. How could he be immune against regular bullets in wolverine but not in X-men. It's pretty obvious it makes no sense. They had to do it that way to make the story work so Logan could loose his memory. Thou he should have lost his memory even in X-men 2.
holyjimbo
14th Aug 2009
Correction: The bullet in X2 doesn't penetrate his skull, just his skin, which is why it pops out when he heals.
Xofer