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Can I re-weigh a reload to avoid KABOOM

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12 comments

  • MIKE WISKEY
    i have don this after discovering a powder measure fault or other problem but this is rair. most magnum loadings can not be double charged as there isn't enough room in the case. a digital scale makes this easy, set the scale to zero with a properly loaded round and then reject every round that is off by more than a couple of grains (depending on the cal.).
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  • Tailgunner1954
    The largest potential for a double charge comes from light charges of fast burning powder. IE 6gr bullseye in a 44mag case, it would be easy to get 12gr to fit. With a powder charge that more nearly fills the case a double charge won't even come close to fitting (overflows the shell).
    The other condition that has been suspected of causing Kaboom's is a light charge of slow burning powder (squib loads), what is suspected is that somtimes the charge reaches a over-pressure condition before the bullet has left the case (spontainous detination). What is scarry about this condition is that the first 49 shoot ok but the gun blows on # 50.
    The best practice is to charge all the cases, than do a visual inspection / compairson of the charged cases (as a lot) before begining the seating process.

    Some guys like a mag full of lead, I still prefer one round to the head.
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  • JustC
    Thanks Mike whiskey and tailgunner1954.

    These are some simple measures that I can take to assure, or at least do my best, to not experience the KABOOM. I would have put hours into coming up with those suggestions, I appreciate the help/advice.

    A great rifle with a junk scope,....is junk.
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  • ericthered
    I have attached two small dental mirrors to my press. One directs the
    light into the cartridge and the other allows me to look in it from where I nomally sit.
    It also requires a nearby light source.
    I can visually check every charge even when using a progressive.

    So far no double charges.

    Eric

    thats'me
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  • JustC
    ericthered, I don't suppose you have a picture of that setup?

    A great rifle with a junk scope,....is junk.
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  • varmit hunter
    Justc.You can get clip on dental mirrors from most fly tying catalogs.

    The most important things, Are not things.
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  • JustC
    Thanks varmint hunter, I will have to check into that. i am still a little fuzzy as to how I set up the whole operation to include the mirrors. Do I clip them to the loading block and move to see each case? I load with a single stage press and try to only do one operation at a time, but a little extra insurance never hurt anyone.

    A great rifle with a junk scope,....is junk.
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  • GWNelson
    Generaly speaking, most "Kabooms", are caused from a measure that was not completely emptied. ie, after loading pistol with 2400, or some other fast burner, and 15-20 grains remain in the measure, that quantity of powder finds may its way into the first centerfire case loaded and there is your "KABOOM". Barrel may be split, casehead welded to bolt head, and various other fun things have ovccurred. This is real. GW.
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  • JustC
    OK, so now that several of you have stated that it occurs often due to a powder mix, does that mean that be me loading the cases with a powder funnel, after weighing each charge by hand, one at a time, I have almost no chance of the KB?

    A great rifle with a junk scope,....is junk.
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  • binder
    I think the dental mirror idea is good, but I would think you would need a better light source shining down on the loads,charged. Most progressive loaders where you get a loaded shell from each crank of the handle does't usually have that problem of double charging. Straight handloading and some turrets allow for a double charge by accident, they also allow for more of visual check of each shell because you can generally see easily on straight wall shells, but you kindof have to cock your head sideways for necked ones.
    An easy way not to double charge shells is to get a loaders block that holds 10-20 shells with a good amount of space between the rows, and cover the remaining shells or flat out just charge 10 at a time, and place that block to the side and charge your next block, know the level of your charge and check each with a bore light. If you have doubled it, most times you'll be able to see the amount of powder in each shell.
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  • spclark
    JustC, Yes, weighting each load is almost foolproof. I've used this method for a couple of years now but suffered a KaBOOM recently with some loads I was testing for .45 ACP. Though I'm positive I didn't double-charge a case (AA#5, once-fired Starline nickle-plated cases, 5 rounds each at 7.5 to 7.9 grains) I had the first round at 7.8 grains blow in the chamber of my HK Expert. Though I came away with nothing but a tingly trigger finger, it ruined my afternoon. I've since learned that 1.) one should NOT shoot lead bullets in non-traditionally rifled guns (HK's, Glock's, Desert Eagle's) - I had been shooting lead wadcutters just before switching to the jacketed bullet test loads, and 2.) I can't be SURE I don't double-charge a case unless I have only one case charged at a time, before the bullet is placed & seated.
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  • spclark
    JustC, Yes, weighting each load is almost foolproof. I've used this method for a couple of years now but suffered a KaBOOM recently with some loads I was testing for .45 ACP. Though I'm positive I didn't double-charge a case (AA#5, once-fired Starline nickle-plated cases, 5 rounds each at 7.5 to 7.9 grains) I had the first round at 7.8 grains blow in the chamber of my HK Expert. Though I came away with nothing but a tingly trigger finger, it ruined my afternoon. I've since learned that 1.) one should NOT shoot lead bullets in non-traditionally rifled guns (HK's, Glock's, Desert Eagle's) - I had been shooting lead wadcutters just before switching to the jacketed bullet test loads, and 2.) I can't be SURE I don't double-charge a case unless I have only one case charged at a time, before the bullet is placed & seated.
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