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Thread: Neck turning...is it worth doing ?

  1. #46
    Member zimmer's Avatar
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    Correct name should be Concentricity Tool And Consistant Neck Tension Destroyer
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  2. #47
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    I considered outside neck turning but realised that unless your chamber was of tight minimum dimensions, it would be pointless because the shoulder bumped / resised cartridge would be centered off the shoulder anyway. I went the route of inside neck reaming only if a donut developed but in addition and / or regardless of that; now always ensure consistent neck alignment and internal even diameter by use of Lee collet neck dies. Annealing will add a little more consistency to neck "tension" on the projectile as well and I anneal brass after around 7th reload.
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  3. #48
    Member Tikka7mm08's Avatar
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    Annealing did more for accuracy than neck turning in my experience.
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  4. #49
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    if its a factory chambering...NO

    if its tight neck custom chambering, you are best to

  5. #50
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    I neck turned because I had to, used mil surp .308 and necked it to .260 but I ended up with 16 1/2 thou neck walls and the loaded rounds wouldnt fit my hunting rifle. Dont bother neck turning my TR rifle yet ( notice the yet) dont think I will.

  6. #51
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    Quote Originally Posted by Tikka7mm08 View Post
    Annealing did more for accuracy than neck turning in my experience.
    +1
    the fool known as res got locked out of his account so made this one

  7. #52
    Bubba...? Ftx325's Avatar
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    I have been annealing all except the thirty rounds also .
    I have gone whole hog on all except the thirty rounds which have just had the primer flash hole cleaned up internally and a shoulder bump. Again just to see if there is any measurable difference in accuracy with identical loads over the full treatment cases.
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  8. #53
    Almost literate. veitnamcam's Avatar
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    Quote Originally Posted by Ftx325 View Post
    I have been annealing all except the thirty rounds also .
    I have gone whole hog on all except the thirty rounds which have just had the primer flash hole cleaned up internally and a shoulder bump. Again just to see if there is any measurable difference in accuracy with identical loads over the full treatment cases.
    I will be interested to see if you can see the difference or it just gets lost in the noise of all the other factors that come into longer range shooting.
    And if you do notice a real difference between the two brass preps whether then annealing that 30 bring them into line without neck turning.
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  9. #54
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    If you've got absolute rubbish cases stamped by foot, and a match grade chamber with great alignment and tight tolerances then neck turning might show benefit (like actually allowing the cases to chamber). I went and measured up a heap of brand new Lapua and Norma brass, apart from the cases with buggered necks out of the packet the consistency was under 1/4thou (so basically the variation was beyond the ability of my measuring kit to accurately measure).

    Even some no-name crap from somewhere unpronouncable only showed a max of 1thou, on once fired cases. Most factory chambers would have more slop than that in the chamber to ensure that all ammo chambers...

    My take on that is unless you have a requirement for a particular neck thickness, if a batch of brass is that bad that you need to neck turn just get better brass!
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  10. #55
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    Do you all realise that the cases which have uneven neck wall thickness also have uneven case wall thickness, this leads to banana cases after they have been fired several times.

    There was an article about this in Precision Shooting several years ago and the author of the article did the shooting and measuring to prove it.

    The best cases for reloading are those with the least runout in case wall thickness, which means they will also have the least runout in the neck thickness. Start with good quality cases if you want accurate ammunition.
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  11. #56
    Member zimmer's Avatar
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    Correct. And even quality cases like Lapua and Peterson have variation. My last lot of those 2 brands in 308 displayed around 0.3 thou variation albeit a very narrow band. One of the worst in the quality line was my 7,5x55 SR Norma cases.

    The other thing is if using brands that have wide neck thickness variation eg 1 thou and sometimes worse , turning may fix that but usually there is an accompanied bad weight variation. Weight variation can be assumed to be capacity variation ( some would argue not, water capacity testing is the only accurate neasure).

    And yes the other one I have had is an indivual case that no matter what, always displayed runout when reloaded.


    PS: @small_caliber I still have a box full of Precision Shooting magazines going right up to the time it folded (with half my annual subscription left to run). The quality had dropped off in the last years but still some excellent reference material in them.
    Last edited by zimmer; 08-01-2021 at 11:59 AM.
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  12. #57
    Member andyanimal31's Avatar
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    Quote Originally Posted by Tikka7mm08 View Post
    No. Not worth it. I have a Hornady concentricity tool to make sure the bullets are centered - I don't think that makes much difference either.
    Yep I have one of those to.
    People ask me about them and I tell the best thing they can do is smash them with a hammer till you cant use them.
    I have tried shooting my straightest and most crooked ammo on the same day and there is no noticeable difference.
    The ammo I make I cant shoot better than so no point mucking around with it.
    In saying that I induction anneal every time as that does.

    Sent from my SM-G950F using Tapatalk
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  13. #58
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    Quote Originally Posted by dannyb View Post
    Is this just for hunting ammo ?
    If so at most I would suggest.
    De cap
    Clean primer pockets
    Anneal (more important for big magnums)
    Clean/ tumble if you like post cleaning
    Full length size
    Trim
    Chamfer
    And load those bitches up
    Others may have other ideas but that is the most I would do for hunting ammo.
    It's all I do and for a long time I didn't even do half of that when I started with my 270win.
    yep that's what I do when my brass needs a tune-up after being reloaded 6 or so times

  14. #59
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    Quote Originally Posted by small_caliber View Post
    Do you all realise that the cases which have uneven neck wall thickness also have uneven case wall thickness, this leads to banana cases after they have been fired several times.

    There was an article about this in Precision Shooting several years ago and the author of the article did the shooting and measuring to prove it.

    The best cases for reloading are those with the least runout in case wall thickness, which means they will also have the least runout in the neck thickness. Start with good quality cases if you want accurate ammunition.
    You can get banana cases even with no case wall thickness variation if the production process isn't up to par.
    T.FOYE likes this.

  15. #60
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    Quote Originally Posted by Mauser308 View Post
    You can get banana cases even with no case wall thickness variation if the production process isn't up to par.
    My mate had a crappy shell holder with way too much slop and and it wasn't even level. It even caused the cartridges to fly out of the autoprimer. Needless to say the finished ammo was banana'd and shot like crap,
    i bought him an rcbs one and now they're within .002" RO which is a vast improvement.

 

 

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