magnum small pistol primer and blue dot

Discussion in 'Handloading and Reloading' started by BJung, Jun 7, 2022.

  1. BJung

    BJung Member

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    I purchased small magnum pistol primers because they were available. I usually just use small pistol primers. To get the most from this primer and Blue Dot - which I happen to have a lot of - would you recommend I try the combination with 9-125gr, 45-200gr, or 40-160gr cast bullets?
     
  2. nick22

    nick22 Member

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    I suppose I would load up 50 rounds at the minimum powder recommendation for each caliber. Some auto loaders don't like cast bullets very well if they happen to be coated that helps.
     
  3. mdi

    mdi Member

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    I would start a new load workup from min suggested load and work up if necessary. Normally, I'll start with two cylinders full for revolvers, 16-18 rounds in two magazines for high capacity semi-autos, 16 rounds for my Garand, 8 rounds for my bolt guns. If I get an unsatisfactory load I have to pull there isn't a bunch, and two cylinders, two magazines, two clips and two magazines/capacity for my bolt guns will give me an idea if I should try more of that load or go on with the work up...
     
  4. GeoDudeFlorida

    GeoDudeFlorida Member

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    None of the above.
    Blue Dot, a.k.a. “Flaming Blue Dirt”, needs a full case and high pressure to work. It’s a very good magnum revolver powder, a fairly good +P revolver powder, and probably one of the best 10mmAuto powders around; but it’s just not great with 9mm, 40S&W or .45ACP.
    Will it go Bang! and push the bullet down the barrel? Sure! U-betcha! Will it be clean, pleasant, accurate, worth the cost of a primer? Nope. Not unless all you want is noise and fire. Then it’s awesome!
     
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  5. Heir Kommt Die Sonne

    Heir Kommt Die Sonne Member

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    I used blue dot with decent results in 45 acp. I use around 9 grains for .357 and worked well enough but i cannot attest to accuracy because i haven't tested that yet.
    It's a good powder for bigger cases like 45, 357 , 44 mag, etc.
     
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  6. Charlie98

    Charlie98 Member

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    Actually... I agree with that. BlueDot is slower than Unique and does not like mid-range loads, let alone target velocity loads. Looking at Alliant's data, they don't have anything listed slower than BE-86 or SportPistol for those weight/cartridge combos... even jacketed. My experience says there's a reason for that.
     
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  7. BJung

    BJung Member

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    OK,grr. I suppose I can try to prove some of you wrong by testing the powder but I don't want to waste my time on it. I have other powders that have more potential. As for the magnum pistol primers, I'll find a use for them later.
     
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  8. BJung

    BJung Member

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    Thanks for the 10mm tip
     
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  9. entropy

    entropy Member

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    None of the above. .357-125 gr., and .44 Mag 240 or 300 gr. That's Blue Dot's wheelhouse.
     
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  10. mokin

    mokin Member

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    I'll second this. I liked Blue Dot for my Glock 29 but I think the barrel was too short to maximize the potential. Blue Dot was just a little too slow.
     
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  11. Paul Toms

    Paul Toms Member

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    FWIW My Wife liked Blue Dot w/124s in her 9mm right up until she swapped over to Unique & 147s. Try it.
     
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