All are true about gunshot entry wound except -
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.
Entry wound is smaller than exit wound
Entry wound is surrounded with collar
Entry wound is everted
Entry wound is inverted