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9mm round up round 1

Discussion in 'Reloading' started by shotgunred, Nov 4, 2012.

  1. shotgunred

    shotgunred local trouble maker

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    Round 1 included SR7625, Tightgroup, WSF and WIN 231. All rounds were mixed brass,
    124 gr. Montana Gold Dots.
    Federal Primers.
    OAL of 1.130.
    Around 150 ft elevation.
    60 Degrees Fahrenheit.


    The first five rounds were just to see which was the softest. I took pumpkins and blasted away. Nice easy targets so I could warm up and get a feel for the rounds recoil. I got my first surprise for the day. I would have assumed it would have been tightgroup as it is the fastest burning of the group Instead it was SR7625 which is a medium burner.

    Softest Recoil.
    1. SR7625
    2. Tightgroup
    3. WSF
    4. WIN 231

    Next it was time to put up some targets and test for accuracy. Again I was surprised. I thought for sure it was going to be WSF closely followed by Tightgroup. I was shocked when Tightgroup ended up to be the most inaccurate of the bunch. It's just every one (except one guy) in my IDPA group that shoots 9mm uses tightgroup. Group think I guess.:crying: When I bought my 9mm I just went straight to tightgroup because they were all using it. It has only been this year that I moved to WSF.

    Most Accurate
    1. WIN 231
    2. SR7625
    3. WSF
    4. Tightgroup
    [​IMG]

    My Win 231 group was good enough that I almost wonder if I should keep looking at other powders.:supergrin: I have had good luck with WIN 231 with the 40SW so these results shouldn't have really surprised me. Next for Win 231 test out to 25 yards.

    Time to get the next batch ready for testing.
     
  2. Colorado4Wheel

    Colorado4Wheel

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    How long of a range did you test at?
     

  3. Tree Rat

    Tree Rat CRB original

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    What are Montana Gold Dots?


    TR
     
  4. shotgunred

    shotgunred local trouble maker

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    Due to the number of people out to the range I was only able to shoot at 30 feet. Win 231 4 shot group was 0.771. I will re-test at 75 feet when I can. I am going to have to go during the week when not as many people are there.

    Bullets.
    [​IMG]
     
  5. SJ 40

    SJ 40

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  6. njl

    njl

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    Gold Dots are a Speer JHP product. Montana Gold makes FMJ, CMJ, and JHP...so Montana Gold Dots doesn't tell us much. Even with that side profile picture, I can't tell if that's their FMJ or CMJ.

    There's all sorts of variables beyond powder type that could affect accuracy, so without having tested and chrono'd a range of powder charges for each powder, I wouldn't say one powder is better/more accurate than another. Unless you've already done that, and are loading all to about the same velocity, saying one powder gives lighter recoil than another also means nothing.
     
  7. JBnTX

    JBnTX

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    3.5 grains of 231 with a 124gr bullet is kind of a light load?

    I use 4.3 grains of 231 with Hornady's 124gr FMJ.
    Accuracy is so good I stopped load developing and settled on that as my 9mm load.
     
  8. SARDG

    SARDG

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    I'd have to agree. Just a .2gr spread (4.8gr - 5.0gr) with my .45 cal N320 load changed my group from ~6" to <3". Different round and characteristics, but a good example of how many rounds of how many loads will have to be fired to reach any meaningful conclusion.
     
    Last edited: Nov 5, 2012
  9. Boxerglocker

    Boxerglocker Jacks #1 Fan

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    Sorry Mike but have to say without a "constant" your tests are useless. Use the same bullet, OAL, primer and push all loads to the same velocity over a chrono then compare.
    Another thing to add, if your getting that much bullet drop at 30 feet assuming you were aiming center of the target, your loads are definately underpowered.
     
    Last edited: Nov 5, 2012
  10. Tree Rat

    Tree Rat CRB original

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  11. njl

    njl

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    I've only checked one source (Hodgdon online), but according to it, that load is 0.9gr below starting. Have you chrono'd it? Shot much of it and it all cycled properly?
     
  12. shotgunred

    shotgunred local trouble maker

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    typo on my part. 4.5 gr
    As Richard says don't trust me until you look it up in a book.
     
    Last edited: Nov 5, 2012
  13. njl

    njl

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    I hope you're more careful than that in your reloading log book. Otherwise, you may go back through it trying to duplicate a load you did a while back and wonder why the velocity is off or why your gun blew up.
     
  14. kd8x

    kd8x

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    I had a FTE with my G19 at 4.0 gr of w231 so just not quite enuff at that level...ended up with 4.2 for the plinking load but I'm using 1.14 oal....
     
    Last edited: Nov 11, 2012