:It happened to me: (or "Lucky I didn't blow up the gun")

Discussion in 'Ammunition & Reloading' started by KG7IL, May 5, 2012.

  1. KG7IL

    KG7IL Well-Known Member

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    After getting the loading bench set up after a home move and a short break from reloading, I threw two loads of 5.5 unique in WCC cases and a 230 LRN to try out in the 1911 .45 ACP

    My first round had a very snappy recoil, so I shot a factory round and confirmed that the hand loaded round was hot. I searched for the case with no avail. My factory case was sitting where I expected it. A further search still was fruitless. I fired my second handload and again had excessive recoil and torque. Still no case to be found.

    I went back to the bench, double checked everything before loading any more. What I found was I errantly set my scale at the first mark, thinking it was 5 gr. A quick double check of this scale revealed that the first mark is 10 grains. What I had was a 10.5 unique, not a 5.5.

    No apparent damage, stretch, cracks, bulges or other problems with the barrel frame and adjoining parts.

    This was more than a proof test, but I am lucky that everything held to gether with such a hot load.

    I credit this to 1) unique, 2) Lead cast Round Nose and 3) a .451 on the bullet.

    I have never had this problem before, but want to ensure it won't happen again. (I'll count the intervals and ensure the scale).

    A Lucky day for me and the Kimber.
     
    Last edited: May 5, 2012
  2. cottontop

    cottontop Guest

    So that was you. No wonder you couldn't find that ejected case. It landed on my porch a few minutes ago.:)
    cottontop
     

  3. steve4102

    steve4102 New Member

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    Glad you or the gun were not damaged.
    A little computer generated data for you to look at.

    Code:
     Cartridge          : .45 Auto (ACP) (SAAMI)
    Bullet             : .452, 230, H&N RN KB
    Cartridge O.A.L. L6: 1.250 inch or 31.75 mm
    Barrel Length      : 4.0 inch or 101.6 mm
    Powder             : Alliant UNIQUE
    
    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   51     4.40    629     202    8381   2531     79.3    0.878
    -18.0   53     4.51    643     211    8781   2624     80.3    0.859
    -16.0   54     4.62    657     220    9194   2717     81.4    0.841
    -14.0   55     4.73    671     230    9619   2810     82.4    0.823
    -12.0   57     4.84    684     239   10057   2903     83.4    0.807
    -10.0   58     4.95    698     249   10509   2997     84.4    0.790
    -08.0   59     5.06    712     259   10973   3089     85.3    0.775
    -06.0   60     5.17    725     269   11451   3182     86.2    0.760
    -04.0   62     5.28    739     279   11943   3275     87.0    0.745
    -02.0   63     5.39    753     289   12448   3367     87.9    0.730
    [B]+00.0   64     5.50    766     300   12968   3459     88.7    0.715[/B]
    +02.0   66     5.61    779     310   13501   3549     89.5    0.700
    +04.0   67     5.72    793     321   14049   3640     90.2    0.686
    +06.0   68     5.83    806     332   14611   3730     90.9    0.672
    +08.0   69     5.94    819     343   15187   3819     91.6    0.659
    +10.0   71     6.05    832     354   15779   3907     92.3    0.647
    
    Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
    Data for burning rate increased by 10% relative to nominal value:
    +Ba     64     5.50    811     336   15232   3631     94.9    0.660
    Data for burning rate decreased by 10% relative to nominal value:
    -Ba     64     5.50    712     259   10790   3175     80.1    0.777
     

    Code:
    Cartridge          : .45 Auto (ACP) (SAAMI)
    Bullet             : .452, 230, H&N RN KB
    Cartridge O.A.L. L6: 1.250 inch or 31.75 mm
    Barrel Length      : 4.0 inch or 101.6 mm
    Powder             : Alliant UNIQUE
    
    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   98     8.40   1093     610   32431   5492     99.8    0.455  !DANGEROUS LOAD-DO NOT USE!
    -18.0  101     8.61   1114     634   34345   5598     99.9    0.443  !DANGEROUS LOAD-DO NOT USE!
    -16.0  103     8.82   1136     659   36341   5697    100.0    0.431  !DANGEROUS LOAD-DO NOT USE!
    -14.0  106     9.03   1157     683   38421   5791    100.0    0.420  !DANGEROUS LOAD-DO NOT USE!
    -12.0  108     9.24   1177     708   40588   5883    100.0    0.410  !DANGEROUS LOAD-DO NOT USE!
    -10.0  110     9.45   1198     732   42846   5975    100.0    0.400  !DANGEROUS LOAD-DO NOT USE!
    -08.0  113     9.66   1218     757   45198   6067    100.0    0.390  !DANGEROUS LOAD-DO NOT USE!
    -06.0  115     9.87   1238     782   47649   6157    100.0    0.381  !DANGEROUS LOAD-DO NOT USE!
    -04.0  118    10.08   1257     807   50203   6247    100.0    0.373  !DANGEROUS LOAD-DO NOT USE!
    -02.0  120    10.29   1277     833   52863   6337    100.0    0.364  !DANGEROUS LOAD-DO NOT USE!
    [B]+00.0  123    10.50   1296     858   55635   6425    100.0    0.356  !DANGEROUS LOAD-DO NOT USE![/B]
    +02.0  125    10.71   1315     883   58524   6513    100.0    0.349  !DANGEROUS LOAD-DO NOT USE!
    +04.0  128    10.92   1334     909   61536   6599    100.0    0.341  !DANGEROUS LOAD-DO NOT USE!
    +06.0  130    11.13   1353     935   64675   6685    100.0    0.334  !DANGEROUS LOAD-DO NOT USE!
    +08.0  133    11.34   1372     961   67949   6770    100.0    0.327  !DANGEROUS LOAD-DO NOT USE!
    +10.0  135    11.55   1390     987   71363   6854    100.0    0.321  !DANGEROUS LOAD-DO NOT USE!
    
    Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
    Data for burning rate increased by 10% relative to nominal value:
    +Ba    123    10.50   1324     895   64101   6250    100.0    0.338  !DANGEROUS LOAD-DO NOT USE!
    Data for burning rate decreased by 10% relative to nominal value:
    -Ba    123    10.50   1255     804   47000   6681    100.0    0.382  !DANGEROUS LOAD-DO NOT USE!
      
     
  4. c3shooter

    c3shooter Administrator Staff Member

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    Welcome to the club. Was doing some heavy jacketed 9mm Parabellum w/ Bullseye, realized part way thru the 50 rounds that my scale had been bumped, and I had a horrendous overload of Bullseye.

    Snarl, curse, rant dirty word dirty word DIRTY word- where is the bullet puller?

    Lesson learned.
     
  5. Staestc

    Staestc New Member

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    I'm glad nobody or anything was damaged!

    Just moved my scale, and this morning noticed that I had set it up wrong and I would have been adding about 2 grains more than I intended. I caught it before I loaded anything, but it drove home that I need to double check everything, every time!
     
  6. ktmboyz

    ktmboyz New Member

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    Glad to hear you and your gun are unharmed. Thats the reason I like a digital scale
     
  7. KG7IL

    KG7IL Well-Known Member

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    yow! That's more pressure than a Kimber critic could take.

    Might be in my future.
     
  8. gandog56

    gandog56 New Member

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    And everybody thinks that it just cannot happen to them!
     
  9. JonM

    JonM Moderator

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    you experienced a 460rowland load. the 1911 is capable of handling that pressure easily but it beats the living snot out of a frame on a gun that doesnt have a strong enough recoil spring.
     
  10. BlueTurf

    BlueTurf New Member

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    You learned a valuable lesson and fortunately did not have to suffer an injury.
     
  11. rjd3282

    rjd3282 New Member

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    That's why I check charges on 2 scales one balance and one digital. The older I get the harder it is to read those beams. Glad you had a good ending to the story.
     
  12. Durangokid

    Durangokid New Member

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    I really like the .460 Rowland. I shoot it in a Ruger BH with a .45 ACP cylinder. I always try to use loads that will over flow if I double charge the case.:)
     
  13. fmj

    fmj Active Member

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    Glad everything worked out ok. For the price of them damn kimbers that could have been a VERY costly mistake.


    ^^^This^^^


    and even then i am always double checking and resetting the "tare" with my powder pan. I also weigh every charge.

    This might be because i still feel like a serious noob to reloading. (and when compared to some on here i AM a noob)

    ^^^This^^^ as welll

    There have been a couple times i have gotten distracted and double charged...its hard to miss powder falling on the bench
     
  14. Overkill0084

    Overkill0084 Active Member

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    Frankly, I'm surprised that 10.5 gr of Unique fit in a .45 ACP without being noticed. 6.0gr gives me a pretty decent case fill.
    Until this thread, it would have bet against that much Unique fitting, much less being able to seat a 230 gr bullet over it.
    It could have been worse, he could have been using Bullseye.
     
  15. mountainman13

    mountainman13 New Member

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    That's .5 grain off from a good .45-70 load. Kinda scary
     
  16. BlueTurf

    BlueTurf New Member

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    This is exactly what I was thinking. I have been using Unique for my .45ACP loads for a long time. I also use the 230-grain round RN FMJ bullet. 6.0 grains of Unique in a .45ACP case pretty much fills it up for sure. It is good his handgun handled the pressure.

    Just for curiosity I am going to try putting 10.5 grains of Unique in a case and see what happens. No, of course I won't try putting a bullet on top of it.
     
  17. fmj

    fmj Active Member

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    That makes 3 of us. I load 6 gr of unique over 230 gr RN FMJ as well. I often think i am compressing the powder charge just a tad @ 6 gr.
     
  18. steve4102

    steve4102 New Member

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    According to the QuickLoad data posted that 10.5gr is 123% case fill. :eek:
     
  19. Overkill0084

    Overkill0084 Active Member

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    What's that you say? Slightly compressed? :)
     
  20. budman46

    budman46 New Member

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    i shot a two 150gr, .308 win reloads in a finn m39 mosin...only after the second case wouldn't eject properly did i discover my error.the brass bulged at the base but otherwise no excitement; the rounds were accurate enough to hit a milk jug sized target at 100 yds.