Anyone use Blue Dot in .357 Sig?

Discussion in 'Handloading and Reloading' started by Lennyjoe, Sep 13, 2021.

  1. Lennyjoe

    Lennyjoe Member

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    I’m getting bored with 9MM, .40 and .45 in the reloading room and since I have quite a bit of XTP 124’s and 147’s I thought I’d give them a try with some Blue Dot in the .357 Sig caliber. Reason why is the Blue Dot pounders have been sitting idle for a while and need to get some use. I can certainly use it later on in 10MM but I have quite a few lbs of 800x for that caliber right now.

    Anyone have any good experience specifically in the .357 Sig?
     
  2. Rule3

    Rule3 Member

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  3. Lennyjoe

    Lennyjoe Member

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    Here’s what I’m looking at for Blue Dot. Hornady 10th edition.
    3F862AC1-CF23-44D5-B6FB-B82757EAFA24.jpeg 34574253-54F5-47CE-8B8B-343424692E27.jpeg
     
  4. Alex G

    Alex G Member

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    357 SIG is a fun one to load for! There are a lot of people out there that are like “oh it’s a bottleneck cartridge, too much work blah blah blah” when you literally load it like any other cartridge.
    I typically run my brass through my 750 once to prep it as follows:
    1. FW Arms Primer Popper Decapping die
    2. Lee Universal decapping die (to extra ensure zero remaining primers)
    3. 40 S&W carbide sizing die (sizes the body)
    4. Empty
    5. Redding 357 SIG sizing die (sizes the neck and shoulder)
    Thats just what I do, but you can do all of that with just a 357 SIG sizing die if you want to as well. Then it gets wet tumbled and is ready to load.

    Loading consists of the following on my XL-750:
    1. Redding 357 SIG expander set to just open the case mouth enough to hold a projectile during indexing
    2. Hornady case-actuated powder measure with a rifle-style insert that does not enter the case in any way
    3. Hornady Powder Cop die
    4. DAA Mr. Bulletfeeder die with pre-loaded projectile tubes
    5. Redding 357 SIG seat/crimp die set to seat and crimp just enough to remove the flare, NO MORE. All crimp is supposed to do is remove the flare, the projectile is held by neck tension only.
    Have loaded thousands with that style setup with good results using AA#7 and CFE pistol with good results, as well as X-Treme 124gr FP’s, and RMR 124 gr MPR’s.
     
  5. JimKirk

    JimKirk Member

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    Yes I have shot Blue Dot in my 357 SIG .... The load showed above in the Hornady data with the 124 grain XTP... Works good ...good velocity and good accuracy ....

    I moved on to Longshot as it was more common on my LGS shelf ... and easier to meter being a ball powder .... and a little more velocity ....

    But if I had a supply of Blue Dot on hand ....I would shoot it without worries...
     
    WrongHanded likes this.
  6. Lennyjoe

    Lennyjoe Member

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    I’ve tried Longshot with 125 grain Montana Gold JHP and wasn’t happy.
     
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