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Thread: Do you weigh your individual components and rounds

  1. #1

    Do you weigh your individual components and rounds

    I was loading up some rounds the other night and decided to weight the batch of completed rounds (around 60) to see what the variance was, I discovered there was up to a 9gr variance across the batch so took the ones that seemed out apart and reweighed the charge which came out as correct.

    I then weighted some brass empties and it appears this is where the variance comes in, even in a single brand there appeared to be a 6-7 gr variance, (these were 30-30) so I was just wondering if anyone else weighs their assembled rounds?

    The bullets appeared to be within 4-5 grains of each other over 30 samples.

    Also, if the brass is sized and trimmed, surely only the capacity could be different which would potentially lead to a pressure difference in the round and potential differences in point of impact? so do you "batch within your batches" for weight?

    Regards,

    Gixer

  2. #2
    I weigh heads and brass and batch accordingly for long range shooting, but not for hunting...

  3. #3
    No point weighing once assembled then batching as you don't no where the variable is in each round.

    K

  4. #4
    Quote Originally Posted by Klenchblaize View Post
    No point weighing once assembled then batching as you don't no where the variable is in each round.

    K
    Sorry, I meant batching components (brass specifically) not batching the assembled rounds...as in - some people batch by number of times fired, but for example do people have sub- batches within their twice fired brass for weights.

  5. #5
    Very suprised to hear that you found a 4-5 grain variation between bullets, they are usually very consistent.

    I used to weigh and batch cases when load developing but can't be bothered now.

  6. #6
    I am one of the sad ones that weigh and batch both new brass and bullets. I reload for a few people and the chronograph (to me) is a very important part of load development. Therefore, for me trying to make clones it is essential that bullets and cases weigh within a gnats tit.


    Personally being retired and waiting around to die, I find I have the time to do the above.

  7. #7
    I never bother weighing cases, I just check that the powder calibration is spot on, apart from that if I can get a 1/2" group rested at 100m that is more than good enough for me.
    atb Tim
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  8. #8
    I've always weighed every powder charge, but never brass or bullets. I did get a nice little mtm scale for Christmas so I'm going to do so from now on. Unecessary for a hunting application but it's my time and it beats listening to the wife!

  9. #9
    As opposed to weighing cases, I find it more beneficial to batch them by measured capacity.
    I only do this with .338lm and .50bmg though.
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  10. #10
    Quote Originally Posted by Glyn 1 View Post
    Very suprised to hear that you found a 4-5 grain variation between bullets, they are usually very consistent.

    I used to weigh and batch cases when load developing but can't be bothered now.
    Probably missed out the point sign before the numbers unless he has been buying particulary crap bullets because as you say most good bullets are quite close weight wise.
    It's the calibre of the shooter that counts not the calibre of the rifle.

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