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Choosing a New Powder for .40

Discussion in 'Reloading' started by jkf74, May 30, 2012.

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  1. jkf74

    jkf74

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    I have been loading 180gr Berry's RN plated for my Glock 23. I have loaded and shot several hundred. My loads have ranged from 4.9gr of Unique to 5.8gr. All my loads have shot fine. But Unique leaks through my powder measure and at the end of a reloading session I have powder all over my bench. All I want to load is as light as I can and still work the slide, and meter well. Im not worried about max loads at all. I am just a plinker. What powder would be a good replacement for Unique. I will also be switching to 165gr fmj bullets if that makes a difference.

    Goals:
    Meter Well
    Work well for light loads
     
  2. XDRoX

    XDRoX

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    If Unique leaks through your measure anything anybody suggests will probably leak even worse.

    Why does you measure leak?
     

  3. Steve Koski

    Steve Koski Got Insurance? Millennium Member

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    WST is my suggestion. Run 3.6-3.8 grains under your 180 grainers.
     
  4. Zombie Steve

    Zombie Steve Decap Pin Killa

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    Welcome to GT and GT Reloading.

    I don't reload .40, but it sounds like you're describing WST.
     
  5. XDRoX

    XDRoX

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    WST was going to be my suggestion too. But if Unique is leaking then WST will leak worse.
     
  6. jkf74

    jkf74

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    I'm really not sure why it leaks. It is the Lee auto disk measure. It is on plenty tight. I have not pinpointed exactly where it is coming from. I'm going to load with the rest of my Unique in the next day or two.
     
  7. WeeWilly

    WeeWilly

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    Sounds like you have the regular AD (rectangle hopper). If you get a Pro Auto Disk upgrade kit your leaking days will likely be over. The pro comes with an elastomer seal between the disks and the hopper, works pretty good.

    You can make the regular hopper leak much less, definitely stop a powder like Unique from leaking. Take the hopper off and with some fine sandpaper on a flat surface, run the edges of the hopper that sit on the stand across the sand paper. Sand it down enough to close the gap between the hopper and the disks. Go slow as if you take a little too much off the disks will drag. Do it on a flat surface to keep the edges of the hopper flat. This should cut most powder leaking to almost nothing. Powders like AA#7, AA#9 will likely still leak a little with this fix, but Unique, WST, Bullseye, etc. won't.

    But the AD Pro upgrade is the real solution. The upgrade kit is like $25. It also comes with an adjustable charge bar so you can venture between disk cavity sizes for that special load.

    In the off chance you do have the AD Pro, yours is a little out of spec. Basically you will want to do the same thing that I described above, take the screws out of the hopper (a pain because they are long) and then sand the edges lightly on a flat surface (the edge that the screws go through). You can sand the little ledge off the bottom of both edges and that will be plenty to move the hopper and seal down closer to the disks to seal even the finest powders.
     
    Last edited: May 30, 2012
  8. Bello

    Bello America/Italia

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    Post a pic how the hell does it leak? If your using the crappy lee hopper with the manual handle then yes I understand that's a pos
     
  9. Bello

    Bello America/Italia

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    ps I use WSF thanks to Fred a few years back!
     
  10. freakshow10mm

    freakshow10mm 10mm Advocate

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    I use WSF, but for lighter loads WST is a better choice. As soon as I read your OP, I figured you were using a Lee powder measure. The others are correct in that the Auto Disk Pro is the better measure and will give you a lot less (or eliminate completely) the powder leaking problem you have.
     
  11. SJ 40

    SJ 40 Deplorable,Clinger

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    What Freakshow said,I have zero powder leakage in my two Pro Auto Disks. SJ 40
     
  12. scccdoc

    scccdoc

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    I use a Dillon "Square Deal" so I'm not sure I can help. I load 165 FMJ for plinking also.I use Hodgdon HP-38 and get consistent results. Not familiar with WST......... DOC
     
  13. OrGlocker

    OrGlocker

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    WSF is a very good powder for the forty, but I'm sure Fred will be around here on this OP and he will recommend his favorite powder of all time "TIGHTGROUP". LOL Fred
     
  14. Rinconjoe

    Rinconjoe

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  15. Jim Watson

    Jim Watson

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    WST is good for light loads but when you get down into the "as light as I can and still work the slide" powderpuff loads, any of the Ball powders will get pretty erratic.

    I get more uniform low velocity with any of several flake powders, 700X, Solo 1000, Clays, and yes, dirty old Bullseye. Of those, Bullseye meters the most precisely in my Dillon. So I have to clean the gun every once in a while, so what?

    No doubt N310 would work well but it is uncommon in stores and expensive when you find it.
     
  16. chaplain 31

    chaplain 31

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    I shoot 40 a lot. I've tried fast powders like 700x and Tightgroup and they work okay. However, for me, I have found that a slightly slower powder does a better job with 40 lite to medium rounds. I prefer HP-38/W231 for those and HS-6 for full power.
     
  17. CaptainXL

    CaptainXL

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    I also had powder leakage with the "standard" rectangular Lee Auto Disk. I bought the Pro Upgrade kit for the Lee Auto Disk and no longer have a leakage problem. The upgrade kit was $20 very well spent.

    In addition to stopping powder leakage you get an adjustable powder measure so you can dial in your powder weight to the exact weight that you want.

    http://www.midwayusa.com/product/155227/lee-auto-disk-powder-measure-update-kit
     
  18. SonnyCrockett

    SonnyCrockett

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    6.0G of Power Pistol......my main 40SW load
    Clean and pretty dang accurate for me
     
  19. FFR Spyder GT

    FFR Spyder GT Ex-Gunslinger

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    I load about 10,000 .40S&W loads a year and for plinking loads I use Universal.
     
  20. fredj338

    fredj338

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    As freak & bello notes, I do like WSF in the 40 for midrange to full power loads, any bullet wt. Unique is also right there, but WSF meters a bit better & a bit cleaner. Both shoot in my very finicky 4006 better than anything else.
    I wouldn't soil my best guns w/ TG.:poke:
     
    Last edited: Jun 5, 2012