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Thread: 303 bullet size

  1. #16
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    Quote Originally Posted by lightning22 View Post
    When you say you've slugged the bore, what method have you used?
    hi
    first tap lead ball down the muzzle ,
    second one from chamber side
    wanted.......303 fl die

  2. #17
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    Quote Originally Posted by gtpkeeper View Post
    hi
    first tap lead ball down the muzzle ,
    second one from chamber side
    If you are putting the calipers across the 5 groove rifling impressions you will be getting a larger diameter than it actually is. There is a way of doing it with V-blocks but for sizing for cast you need an accurate throat diameter.

    I use the pounded or impact slug method described below, taken from the Cast Boolits archive.

    Another alternative (prefered by 45 2.1) is a pounded slug. One fills a fired case with a hard lead alloy leaving just a little of the neck empty, and then drives a soft lead slug into the lead/case/throad area. Using a brass rod of near bore dimensions if the best driving road. There are other ways to get the same pounded slug, but this is the way that worked best for me. Lube the bore and outside of the case and use a heavy hammer to pound the slug into shape. there is no shrinkage doing it this way.

  3. #18
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    already put slug down the chamber into the rifle , its 2 band , then remove slug i measured the two bands that were stcking out ...and got the reading of ,318
    Last edited by gtpkeeper; 31-08-2017 at 11:28 PM.
    wanted.......303 fl die

  4. #19
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    Quote Originally Posted by gtpkeeper View Post
    Ok so what size do you think
    .314 gas checked and lee alox lubed
    email...... stephenbarrow@ntlworld.com
    3 bed static at thornwick bay to let 2016....pm for details

  5. #20
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    I'm done with casting lead bullets , done way too much , I buy bullets for my 303 from dodgyrog sized exactly to my bore , my bore is 313" and in good condition so I buy .314 bullets . Don't shoot lead bullets after jacketed without de-coppering the bore scrupulously , if you fail to do this any groups you achieve will be of the shotgun variety.
    This year will go down in history. For the first time, a civilized nation has full gun registration. Our streets will be safer, our police more efficient, and the world will follow our lead into the future! Adolph Hitler 1933

  6. #21
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    cheers guys for your help,
    whats best for removing copper then
    wanted.......303 fl die

  7. #22
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    I use Boretech Cu+2

  8. #23
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    Quote Originally Posted by lightning22 View Post
    I use Boretech Cu+2
    Hopps No.9 will do it ,just follow the instructions carefully.
    This year will go down in history. For the first time, a civilized nation has full gun registration. Our streets will be safer, our police more efficient, and the world will follow our lead into the future! Adolph Hitler 1933

  9. #24
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    Quickest is clean shot with the accelerator but long term if you can store the rifle horizontal is C2R
    I also like k12 too
    Patch bore first with brake cleaner to remove carbon
    email...... stephenbarrow@ntlworld.com
    3 bed static at thornwick bay to let 2016....pm for details

  10. #25
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    would ammonia be good too ?
    wanted.......303 fl die

  11. #26
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    Quote Originally Posted by gtpkeeper View Post
    would ammonia be good too ?
    brake cleaner is cheap on the bay
    email...... stephenbarrow@ntlworld.com
    3 bed static at thornwick bay to let 2016....pm for details

  12. #27
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    Quote Originally Posted by loiner1965 View Post
    brake cleaner is cheap on the bay
    yup
    but was askin about ammonia , that should get rid of copper

    cheers tho
    Last edited by gtpkeeper; 06-09-2017 at 05:34 PM.
    wanted.......303 fl die

  13. #28
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    Quote Originally Posted by gtpkeeper View Post
    yup
    but was askin about ammonia , that should get rid of copper

    cheers tho
    you can try it and see......
    i use brake cleaner followed by a dry patch then i use any of the cleaners that are close to hand......never had an issue with copper now
    edit.....save those vapour bottles and put your rifle bore cleaner in them....saves waste and easier to add drops
    email...... stephenbarrow@ntlworld.com
    3 bed static at thornwick bay to let 2016....pm for details

  14. #29
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    Quote Originally Posted by loiner1965 View Post
    you can try it and see......
    i use brake cleaner followed by a dry patch then i use any of the cleaners that are close to hand......never had an issue with copper now
    edit.....save those vapour bottles and put your rifle bore cleaner in them....saves waste and easier to add drops
    good tips cheers
    wanted.......303 fl die

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