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Thread: Neck Tension

  1. #1
    SD Regular willie_gunn's Avatar
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    Neck Tension

    This from the thread on Ammo Return

    Quote Originally Posted by finnbear270 View Post
    I returned 60 rounds of Lapua .223, some were seated without any neck tension
    finnbear, I was very interested to read your above post.

    Before I started reloading I used Winchester 150gr pretty much exclusively in my .308. However, I've found when reloading that the Winchester cases are lacking neck tension, so much so that in a good proportion of the assembled rounds I can pull the bullets out by hand Other brass (Lapua, Norma, etc.) processed through exactly the same dies seem fine.

    I only neck-size my reloads, so was trying to work out why only the Winchester brass would be causing this problem. I presume it is the brass thickness at the neck that is the cause of the issue? i.e. although the external diameter of the brass is the same, because of thinner cases the internal diameter on the Winchester brass is fractionally bigger. I was surprised that the difference between Winchester and the other makes was so significant.

    I now have a lot of Winchester .308 brass that is cleaned and primed, but won't be used

    willie_gunn

  2. #2
    I received no acknowledgment whatsoever from either Lapua, or the importers over this, Can you imagine the scene if a newbie had just shoved another one home by mistake in the heat of the moment?
    (The Unspeakable In Pursuit Of The Uneatable.) " If I can help, I will help!." Former S.A.C.S. member!

  3. #3
    Advice needed - Like Willie, I too have some primed brass that I would like to de-prime. What's the recommended approach? Thanks JCS

  4. #4
    If you don't mind cleaning your rifle, I just pop em in the slide & close up the bolt, then pop em off just like shooting a round, I always make sure I do this into a catcher of some sort, they just blacken the barrel a bit, soon cleans out, much faster than in the press & no chance of eyes or face catching something!
    (The Unspeakable In Pursuit Of The Uneatable.) " If I can help, I will help!." Former S.A.C.S. member!

  5. #5

  6. #6
    Quote Originally Posted by finnbear270 View Post
    If you don't mind cleaning your rifle, I just pop em in the slide & close up the bolt, then pop em off just like shooting a round, I always make sure I do this into a catcher of some sort, they just blacken the barrel a bit, soon cleans out, much faster than in the press & no chance of eyes or face catching something!
    Thanks, I would do that, but the brass is for the old 260 and won't chamber in the new 260. If it did chamber, I would just load something up for practice. I guesstimate that the new chamber is 6-7 thou shorter. What can I do on the reloading bench to get rid of these primers? Rgds JCS

  7. #7
    You guys need to catch up!

    Back off the decapping rod so that it won't contact the primer and then FL resize as normal. (From the Been there, Done That file...) ~Muir

  8. #8
    Quote Originally Posted by Muir View Post
    You guys need to catch up!

    Back off the decapping rod so that it won't contact the primer and then FL resize as normal. (From the Been there, Done That file...) ~Muir
    Muir. Thanks. JCS

  9. #9
    SD Regular willie_gunn's Avatar
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    Quote Originally Posted by Muir View Post
    Back off the decapping rod so that it won't contact the primer and then FL resize as normal
    Muir

    Thanks - though in fact my original problem is not the primers, it's the lack of neck tension on Winchester brass. I can't understand why only Winchester brass is affected, and would be very grateful for any insight you can provide.

    willie_gunn

  10. #10
    Quote Originally Posted by Muir View Post
    You guys need to catch up!

    Back off the decapping rod so that it won't contact the primer and then FL resize as normal. (From the Been there, Done That file...) ~Muir
    Muir. All sorted now, just took out the decapping rod altogether from the bushing die and set the shoulders back ~5thou. Thanks again. JCS

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