You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is All are true about gunshot entry wound except - and explain in detail?
Entry wound in inverted (except in contact shot where it is everted)
Entry wound is smaller than exit wound (except in contact shot where it is larger).
Entry wound is surrounded by 3 collars : Abrasion/contusion collar, Dirt/grease collar and lead collar.