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223 cases that are 1.740-1.750

Discussion in 'Reloading' started by FiremanMike, Apr 15, 2014.


  1. FiremanMike

    FiremanMike
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    I ran a bunch of 223 spent brass through my sizer to get it ready for trim and found several that were under 1.750 (my trim length). Have any of you had any issues with loading cases that were between 1.740-1.750? I'm not loading precision rounds here, if that matters.
     

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  2. jr05

    jr05
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    You will be fine between 1.740 and 1.750" trim lengths using your current COL specs. Is this once fired brass? I have seen Federal walmart brass come in as little as 1.730"

    What dies are you using? Some dies like the RCBS x-dies require a trim length of 1.740" to start off with anyway.
     

  3. Boxerglocker

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    No issues load them up, most commercial .223 is less than 1.750 new.
     
  4. dkf

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  5. fredj338

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  6. PCJim

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    If you're loading projectiles with a cannelure and use the cannelure to determine bullet seating depth, set your bullet depth using a proper length case. Otherwise, you'll be fine.
     
  7. Hoser

    Hoser
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    Heck I purposely trim mine to 1.740.

    You will be fine.
     
  8. FiremanMike

    FiremanMike
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    What's an X-die? (dodges the shoes being thrown at me)
     
  9. Taterhead

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    It is an RCBS sizing die that has a mandrel as part of the decap/expander ball stem that keeps brass from growing. To use the dies, you first size with the mandrel screwed out (not engaged). Then do an initial trim to 1.74". Then after that, subsequent re-sizing with the mandrel engaged slows case growth.
     
    #9 Taterhead, Apr 15, 2014
    Last edited: Apr 15, 2014
  10. dkf

    dkf
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    [ame="https://www.youtube.com/watch?v=TaKtwSorMoE"]Reloading: RCBS X-Die Complete Tutorial - YouTube[/ame]
     
  11. FiremanMike

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    Hmm, I have reservations.. What's the opinions around these parts about that die?
     
  12. F106 Fan

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    I think the reviews and experience of reloaders on this forum have been positive. I bought the die but I haven't used it yet.

    In the beginning, I was concerned about how long it would take to resize thousands of .223 cases. And to have to do it every time would take a lot of time. So, I bought the die.

    In the meantime, I set up a toolhead on my 650 to size and trim. Since I can process the cases at about 1400 per hour, I haven't needed to try the die.

    One toolhead to size and trim, another to reload. Works for me.

    Maybe someday I'll try the die.

    Richard
     
    #12 F106 Fan, Apr 16, 2014
    Last edited: Apr 16, 2014
  13. ColoCG

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    I also 2nd this. I have no problems with .223 brass trimmed to 1.740" for the x die. in fact. I am in the process of trimming a batch of a few hundred now.
     
  14. Taterhead

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    Ultimately, that is the way to do it. That Dillon electric trimmer is on my wish list. Then a Super 1050 for swaging primer pockets! I'm not at the shooting volume to justify it yet though, but the toolhead mounted trimmer is on the short list.
     
  15. F106 Fan

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    That's actually the way I am doing it today. I started with the two toolhead approach on the 650 but to deal with the primer pockets, I now do the the resize and trim on the 650 and the reloading on the 1050.

    I moved my .45 ACP loading from the 1050 to the 650. There isn't much of a difference in speed but having a press that swages primer pockets is exactly the right thing for .223.

    Richard
     
  16. Colorado4Wheel

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    To many it's like magic and works great. To others they hate it.
     
  17. fredj338

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    I set a test batch of 20 aside to track. Thru 8 reloads, no significant case length stretch. I am running them thru an AR, so they get FL sized, max headspace in most guns. I am happy with never having to trim after the initial case prep.
     
  18. cheygriz

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    I just pop the Dillon case trimmer into my old Texan "C" press, run the case into the trimmer and call it good.
     
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