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Thread: cast bullet weights

  1. #1

    cast bullet weights

    Just had a casting session and cast 200 .22 Hornet rounds using my Lyman 44grn mould, out of curiosity I pulled out the elactronic scales to see the actual weight, and was surprised to se quite a few under 43grn and a few over 44grn 1 at 44.9grn I have cast and shot lots of thes bullets so I know its safe, just wondering what tollerance other people use, i am discarding over 44grn and under 43.2grn just to see if this makes a difference to accuracy

    Cheers
    Ray

  2. #2
    Quote Originally Posted by Ray7756 View Post
    Just had a casting session and cast 200 .22 Hornet rounds using my Lyman 44grn mould, out of curiosity I pulled out the elactronic scales to see the actual weight, and was surprised to se quite a few under 43grn and a few over 44grn 1 at 44.9grn I have cast and shot lots of thes bullets so I know its safe, just wondering what tollerance other people use, i am discarding over 44grn and under 43.2grn just to see if this makes a difference to accuracy

    Cheers
    Ray
    It should make a difference. Is it a multi cavity mold??~Muir

  3. #3
    Yes its a double cavity mold
    Ray

  4. #4
    Have you segregated cavities to see if one is smaller?~Muir

  5. #5
    Quote Originally Posted by Muir View Post
    Have you segregated cavities to see if one is smaller?~Muir
    never thought of that as its a Lyman mold,,,,,good quality,, as are other makers molds,,,,think i need to experiment take the scales out to the workshop and cast some bullets from each cavity and compare them for weight and measurement, i did try sizing a couple of over weight bullets then weighing them again and they came out the same weight so i can take that out of the equation, this is not really that important for the hornet, but i am getting back into BP shooting and am really interested in black powder cartridge shooting at long range, so if it makes a difference with a cast 44grn bullet it will make a huge difference with a cast 500 grn bullet
    Ray

  6. #6
    Try and keep the temp even throughout the session too.

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  7. #7
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    Over the decades there have various articles of deliberately manufacturing cast bullets to have voids and other defects. Amazingly for PRACTICAL purposes it didn't make much difference.

    I cast commercially using Hensley & Gibbs custom matched identical pairs of six cavity moulds. Variation was tiny in weight to weight. Most moulds aren't that good...yet seem to nevertheless shoot just as well.

    I would not worry.

  8. #8
    MV average 2100 fps , gas checks fitted ,mix my own lead to Lyman#2 recipe,5% tin 5% antimony and 90% lead the PPI that i used to get the cases shot well with ocasional flyer
    loaded up 3 rounds to try in the garden, short test as it was pi**ing rain, first shot high so came down a couple of clicks and sent the other 2 will do some more testing tomorrow if its dry
    Bullet 44grn Lyman mold # 225438
    Powder 8.0grn H110
    OAL 1.676
    Click image for larger version. 

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    Cheers
    Ray

  9. #9
    Bottom pour or dipper?

  10. #10
    Quote Originally Posted by xavierdoc View Post
    Bottom pour or dipper?
    Dipper

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