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Thread: Question for the reloading collective

  1. #1
    SD Regular teyhan1's Avatar
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    Question for the reloading collective

    I was just messing about doing some loads for a bit of play this week.
    I thought I'd bang up a standard Nosler round based on their website.
    I have a Ruger No1 .257 Roberts.
    Hornady gauge gives COAL of 2.858 with no jump
    Bullet being used is Nosler silvertip 115gr.
    Their load gives COAL as 2.750 with SAAMI spec as 2.800
    Not that I don't think a No1 action would take it but I'm concerned about seating so much deeper

    What say you
    “Man surprised me most about humanity. Because he sacrifices his health in order to make money.Then he sacrifices money to recuperate his health. And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived.”........Dalai Lama

  2. #2
    As always - seat bullets to give full contact inside case neck with boat tail just starting at neck/shoulder joint to give best neck tension friction area. - Measure COAL at that. Assuming it is less than your 2.858" , still fits in the magazine, feeds ok and doesn't go below SAAMI length. You will be ok to start working up the load from 10% below book max. for your mix of components. - There is no point in shortening COAL before doing the powder load work up as it simply limits case capacity & may not allow you to reach the optimum - You can always shorten COAL afterwards when you know the best performing powder load range following OCW work up.

    Maybe Quickload could be used to give you some indications of likely pressure & velocities - It can offer guidance but it is only theory so mustn't be used as a shortcut.

    Ian

  3. #3
    You guys make me weep. Truly. Quick Load??? Really?? You can't reason this out?
    SAAMI spec is generally the maximum over-all length a cartridge can be. Will the bullet be impinging on the powder supply to a great extent?? Are you starting at SAAMI Maximum pressures?? Or are you starting at minimum and working up as you should?? If the answers to the first two questions are no, and the last, yes, then it reasons that you should be fine. FWIW, checking several different data sources show the Max OAL to be between 2.750 and 2.775 inches. The original OAL was 2.75 inches.

    You will be fine. ~Muir

  4. #4
    I just mentioned Quickload Muir as an additional theoretical data source. LOL.

    Ian
    Last edited by Yorric; 03-03-2015 at 10:32.

  5. #5
    I know. It's just another case where the fixation on OAL shows itself to be more confusing than 'seating depth'. Two bullets of the same weight, but different lengths, loaded to the same OAL technically will generate differing internal ballistics.~Muir

  6. #6
    If you are touching the lands at 2.858 then that's your starting point for this bullet. To be safe in hunting conditions you would not want to be touching the lands ideally, so come off 10 thou. If it still fits in the magazine and loads correctly AND there is plenty of bullet in the neck of the brass to hold securely theres nothing wrong with it.

    Choose your powder and work your loads up from 10% off manufacturers max and watch for the sticky bolt/flat primers as usual. When you have found the max speed back of 0.3 grains at a time and look for your best 3 shot group. When you have your best group size fine tune by coming off 10 thou at a time on the seating depth.

    This system always works for me. Never found a need for Quickload, it's theory and you still need to go through the above to be safe, but perhaps I'm just old fashioned.
    So much to learn and so little time left

  7. #7
    Its a ruger No.1 FFS!
    it doesnt have a mag that I am aware of
    OAL should be of no consequence to loading the round

    start your loads with at least a full calibre depth of shank seated and fine tune from there
    I have yet to come across a rifle that requires a land kissing load in order to shoot

    NO factory loads are anywhere near the lands

  8. #8
    SD Regular teyhan1's Avatar
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    Quote Originally Posted by bewsher500 View Post
    Its a ruger No.1 FFS!
    it doesnt have a mag that I am aware of
    OAL should be of no consequence to loading the round

    start your loads with at least a full calibre depth of shank seated and fine tune from there
    I have yet to come across a rifle that requires a land kissing load in order to shoot

    NO factory loads are anywhere near the lands
    Bewsher you are quite right of course it doesn't have a magazine. OAL therefore has no consequence with regards to rifles with no magazine.
    To everybody else.
    This picture may help as to why I think it just looks weird, not saying it is wrong it just LOOKS ODD.
    Top round made to 2.754
    Next bullet
    Next bullet to max OAL
    Next bullet

    You see the bullet is more in the case than out of it on the first round and there is plenty of it seated on the neck even on the second round.
    Is it me. Am I just having one of those moments.
    Attachment 53507
    “Man surprised me most about humanity. Because he sacrifices his health in order to make money.Then he sacrifices money to recuperate his health. And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived.”........Dalai Lama

  9. #9
    Dohhh! - Sorry I missed the Ruger No1 bit. I must need new spex!!

    That is a good photo demonstrating where you're coming from in your first post.

    As previously indicated start off with the bullet set out maybe 10 thou off the lands, work up the powder load & possibly fine tune it by seating deeper.
    That way your rounds will be more pleasing to your eye, (good for your confidence) and you can work safely from low to higher pressure loadings right through the process.

    Ian

  10. #10
    SD Regular teyhan1's Avatar
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    Maybe I haven't explained things correctly, I am often misunderstood.
    I am absolutely not fixated by OAL.
    Muir I have often read your posts on seating depth and going at least to the boat-tail.
    You can see by the photo that I am WAY past that.
    You can also see by the photo that if I were to follow Noslers reload data (which I was only messing about with) that the jump to the lands is nearly the length of the Ballistic Tip. Is that too much? The jump would be approx .120 .
    When I was loading for my .30 cal I'd typically test depths from .020 to around .080 and would often find somewhere between .030-.065 would achieve a good result.
    It just LOOKS ODD
    “Man surprised me most about humanity. Because he sacrifices his health in order to make money.Then he sacrifices money to recuperate his health. And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived.”........Dalai Lama

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