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Thread: Neck turning brass

  1. #1

    Neck turning brass

    Hi everyone, I am interested to hear from the SD community with experience of neck turning brass.

    What at are the benefits, is it less pressure in chamber, prolonged brass life or better accuracy?.

    I am achieving good results from reloads but wonder if there is any benefit in neck turning my brass.

  2. #2
    I have just ordered a rifle in .284W and have been told that I will have to turn the necks of the necked out 6.5-284 Lapua cases that are the most accurate to use. I am assuming that they won't chamber without being turned down, but I'll find out when I start.

  3. #3
    As I understand it unless you have a tight neck chamber as many bench rest rifles do you are wasting your time neck turning and may be actually making things worse by increasing the amount the case neck has to expand to fill the chamber mouth.

  4. #4
    For my probably wrong view, its when the brass is used it slightly "grows" around the neck, and you have can have a thick ridge of brass building up by the shoulders, so you turn them down a tiny amount to keep them uniform. I know someone who does it, but then he weighs and checks the volume of every case he uses, he also checks each bullet is central, and checks the speed of every batch of bullets he makes up.etc etc etc . I lovingly call him anal,,,,,,,,,,,,,he lovingly points out he shoots better than me.

  5. #5
    ok to put a few thought on this

    if you are using bushing type dies its better to neck turn to get the full benfit
    also necking up 6.5 to 7 mm neck turning will help eleviate possible donut issues
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  6. #6
    Tam

    Neck Turning Basics also Google German Salazar and neck turning.

    I've found neck turning advantageous for both factory chambers and custom builds.

    Regards

    JCS


  7. #7
    Great article, JCS. I neck turn, every little helps on the quest for accuracy

  8. #8
    Quote Originally Posted by Conure View Post
    As I understand it unless you have a tight neck chamber as many bench rest rifles do you are wasting your time neck turning and may be actually making things worse by increasing the amount the case neck has to expand to fill the chamber mouth.
    This. ~Muir

  9. #9
    Interesting article and replies, thanks all.

    i don't think I will be rushing into it just yet. Sounds like it could be a lot of work for very little gain.

  10. #10
    Tam,
    neck turning can help. The whole theory on accuracy is that everything you use is going to be the same. Neck turning even to take the high spots of the necks allows the bullet to stay central to the bore during obsturation. If you have a high spot, it can essentially be enough to mis-align the bullet when it is entering the lands.

    It is a simple process to take off the high spots on the case, it gets a little more labour intensive when you have to turn for a tight neck chamber.

    You can borrow my tools if you want but I dont think I have a mandrel for .300.

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