I just purchased this die and I am not fully convinced that this video is correct in the way the day is set up.
this die is designed to hold the entire case, for example, so I would have started by seating the body all the way down until touching the loader plate and then, with the micrometer extended out to the maximum setting I wouls find my correct oal.
i think that by not using the die body fully you will get scraped cases as shown in this thread, as your die can’t fully align the brass before seating the bullet.
Also, the whole point of having a micrometer is being able to start from zero and not use a guess-stimation.
Please correct me if I am wrong, as I am going to be setting this die soon and might even do a new video If I find a better way to set it up.