Preparing Brass Cases for Precision Rifles (EXTREME RELOADING ep. 08) 

You are welcome. I do not think you are wasting your time. I spend a lot of time on the primer pockets/flash holes and a lot of time on the neck/mouth. Since a good resizing die will very consistently resize the case and set the shoulder, the growth that we see takes place along the neck. So we trim it. Trimming those OAL case lengths to tight tolerances is important and in reality what you are doing also is making the length of the neck the same (since the shoulder position relative to the case head has been set by the die). Thus, you are taking steps to improve neck tension and a consistent release of the bullet. Recall, there are two axes along which the case neck grasps the bullet. One is along the longitudinal (length) axis of the neck. Ensuring uniform lengths makes each case as consistent as possible in this regard. Second, is along the radial axis of the neck. To effect uniformity here, we anneal the brass and expand the necks precisely. Good question and thank you for watching and posting.

Hello and thanks for watching and posting. It is good to see your name in the comments again. I did an experiment and video with the Annealeez a few years ago and it works. That is it makes the brass more ductile. Here is the link to that video if you are interested ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-fBBL2d8otRg.htmlsi=tAHjIZywtv-45gX4

You will find some variability in the actual weight of most bullets. You can sort them by weight so as you shoot them each group will be consistent. Do not try to alter the bullet because doing so will effect the aerodynamics and flight characteristics of the bullet even if you work on the base of the bullet. That is the place where the air currents meet after passing over the bullet and form some turbulence. Altering the base of the bullet will alter the airflow dynamics as is not recommended. I hope this helps.