Question: Given that Logan's body (skin, bone, muscle, etc) is what "regenerates" quickly, and Adamantium is absolutely fixed once it is solidified, Logan would now have two permanent holes in the front of his skull from the bullets fired into his brain to destroy his memories at the end of the film? Unlike the skin, muscle, bone and brain tissue, the Adamantium would not "heal over" or regenerate, so the two vulnerable bits of bone would remain, a bit of a vital vulnerability in a dangerous area of the body.
Answer: That would indeed seem to be the case. Granted, it would have to be an extremely lucky shot to find one of those holes under his flesh, but, yes, it is an apparent vulnerability.
Tailkinker ★