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Dillon 550b leaks powder when reloading .223

Discussion in 'Reloading' started by kubura, Mar 6, 2010.

  1. kubura

    kubura

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    As the title says, it only happens with .223 remington.

    I never had this problem with .308, 30-06, .30-30 or 7.62x39.

    When the powder bar assemly moves about a half way back from right to the left, slotted bellcrank assembly, powder bar assembly and the failsafe rod are not operating smoothly. At that point, the powder bar assembly stops for a split of a second, before it goes back to the left, and my 550b automatic powder system turns into a salt shaker.

    It happens on every 3rd or 4th round, regardless of the powder I use (Varget, Benchmark, IMR 4064, IMR 4198, H-335, RE-15).

    I called Dillon several times. Everyone I talked to was very friendly. Several things were suggested: adjusting the failsafe rod and cleaning the powder bar assembly. However this thinkering did not solve my problem. I called again this morning, and was told that "some powder leak is normal with .223 cases because of the small size of the case mouth" :dunno:

    550b owners, have you run into this problem when reloading .223?

    Any help is very much appreciated.
     
    Last edited: Mar 6, 2010
  2. Hydraulicman

    Hydraulicman

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    must be a fine powder....
     

  3. sig2009

    sig2009

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    Are you using the magnum powder bar? If you are using the standard powder bar powder will drop out. Ask me how I found that out! Switch to the magnum powder bar and you won't have that problem anymore.
     
  4. kubura

    kubura

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    I am using the standard large powder bar that came with 550.

    I checked several times that everything is lined up right. I even got the alignment tool from Dillon. The right buttons are installed, no: 3, to hold the case in the right position. No burrs on the case mouth. I used brand new Lapua brass from MidwayUSA. It's not jumping when the shellplate is indexed; and it is still spilling powder. This thing is driving me nuts.

    What's the magic with the magnum powder bar? Please, share the experience.

    I will call Dillon on Monday.
     
  5. rjrivero

    rjrivero

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    This is the issue. You need to take that powder assembly off the die and figure out why it's not working smoothly.
     
  6. Hoser

    Hoser Ninja

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    What powder?
     
  7. P+P

    P+P

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    I think it's powder bridging dropping 20+ grains into a small .220 case neck requires more time than 40+ grains into a .305 neck, so I instead of a gentle push at the top of the stroke I give it a slight bump to shake the powder loose in the measure and I also dwell a few seconds longer at the top of the stroke to let all the powder all fall into the case ... you can see this when checking a powder charge and you dump the powder from the case it sometimes hangs up and takes a little shake to get the powder to move . Like sand in a hour glass the smaller the hole the slower the flow...
     
    Last edited: Mar 7, 2010
  8. dudel

    dudel

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    I had it happen early on when I first used the 550b for 223. Turned out I had too much lube near the area of the brass mouth. Caused powder to clump and stick as it was going through that tiny case mouth. I now use less spray lube and the problems seems to have resolved itself. BTW, I'm using Varget. Love that powder.
     
  9. dudel

    dudel

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    I didn't catch it at first either; but he does mention:

    It happens on every 3rd or 4th round, regardless of the powder I use (Varget, Benchmark, IMR 4064, IMR 4198, H-335, RE-15).

     
  10. kubura

    kubura

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    Varget, Benchmark, IMR 4064, IMR 4198, H-335, RE-15
     
  11. kubura

    kubura

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    That makes sense.
     
  12. kubura

    kubura

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    I think this may be the problem.
     
  13. kubura

    kubura

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    sig2009, would you elaborate, please?
     
  14. dudel

    dudel

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    I'm using the standard bar for Varget, it works fine for me.
     
    Last edited: Mar 7, 2010
  15. Hoser

    Hoser Ninja

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  16. unclebob

    unclebob DFC, MSM, 13 Air Medals.

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    It’s been 20 or 30 years ago since I loaded for .223 But since you had problem with the powder sticking too the lube. I would run the cases threw the press with just the sizer die. Then clean off the lube.
    Ball powders seam too work better with the small case mouth. Also wait a couple of seconds before raising the handle. Taping the side of the platform might help also before lowering the ram.