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Thread: Quickload users

  1. #1
    dog chaser distant stalker's Avatar
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    Quickload users

    are there any quickload users that feel like checking the below for me?

    6.5 creedmoor
    Hornady brass - i believe 53.5 gr h20
    142gr smk 72.5mm oal
    Reloader 16 powder
    Curious about how the theorized data maps against my loads from today

    Thanks in advance
    Last edited by distant stalker; 22-01-2021 at 09:28 PM.

  2. #2
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    barrel length ??

  3. #3
    dog chaser distant stalker's Avatar
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    Knew I missed something, 22 inch

  4. #4
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    Cartridge : 6.5 Creedmoor Hornady
    Bullet : .264, 142, Sierra HPBT MatchK 1742 G7 Litz
    Useable Case Capaci: 47.951 grain H2O = 3.113 cm³
    Cartridge O.A.L. L6: 2.854 inch = 72.50 mm
    Barrel Length : 22.0 inch = 558.8 mm
    Powder : Alliant Reloder-16

    Predicted data by increasing and decreasing the given charge,
    incremented in steps of 2.0% of nominal charge.
    CAUTION: Figures exceed maximum and minimum recommended loads !

    Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
    % % Grains fps ft.lbs psi psi % ms

    -20.0 80 34.40 2230 1568 30742 9161 96.0 1.558
    -18.0 82 35.26 2284 1645 32803 9404 96.9 1.517
    -16.0 84 36.12 2337 1722 34992 9633 97.6 1.477
    -14.0 86 36.98 2391 1802 37329 9846 98.3 1.437
    -12.0 88 37.84 2443 1882 39824 10043 98.9 1.394
    -10.0 90 38.70 2496 1964 42489 10222 99.3 1.353
    -08.0 92 39.56 2548 2047 45336 10381 99.7 1.313
    -06.0 94 40.42 2600 2131 48349 10522 99.9 1.275
    -04.0 96 41.28 2651 2216 51540 10642 100.0 1.238
    -02.0 98 42.14 2702 2302 54934 10744 100.0 1.203 ! Near Maximum !
    +00.0 100 43.00 2752 2388 58548 10842 100.0 1.169 ! Near Maximum !
    +02.0 102 43.86 2802 2475 62397 10937 100.0 1.136 !DANGEROUS LOAD-DO NOT USE!
    +04.0 104 44.72 2851 2563 66500 11028 100.0 1.105 !DANGEROUS LOAD-DO NOT USE!
    +06.0 106 45.58 2900 2651 70876 11117 100.0 1.075 !DANGEROUS LOAD-DO NOT USE!

  5. #5
    dog chaser distant stalker's Avatar
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    Thanks @Tentman my magnetospeed was saying that 43.5 gave an average of 2699, given its not standard OAL i was curious about how it sat theoretically against things like quickload predictions. Alliant data gives amax of 43.9 gr with an OAl of 2.8" which i would have thought would give more pressure being shorter, seems they are more ok with higher pressure?

  6. #6
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    Q/L is a guide only and needs good input data to give good results, usually with good inputs it should be within 15-40 fps. Is the case capacity you gave from a case fired in your rifle then measured?? Q/L (and GRT) do show significant effects on changing COAL but in practise it seems to be a bit less especially with the "pointy" bullets being used these days . . .

  7. #7
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    And just to make your day, I think my V2 magnetospeed has been giving me slow readings, I really must get it calibrated . . .

  8. #8
    dog chaser distant stalker's Avatar
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    Quote Originally Posted by Tentman View Post
    And just to make your day, I think my V2 magnetospeed has been giving me slow readings, I really must get it calibrated . . .
    Thats my other consideration, seem to have to bump speeds up in ballistics apps when in the field and its missing a few shots (v3 bayonet after the lost one got a love bite)

  9. #9
    dog chaser distant stalker's Avatar
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    @Tentman I Re-did water volume and got 53.5gr

 

 

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