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What happens when your rifle brass is too long?

Discussion in 'Reloading' started by cysoto, Apr 20, 2014.


  1. cysoto

    cysoto
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    I just finished trimming 300 pieces of .308 Win brass cases to 2.005" with a hand-crank cutter and let me say that IT SUCKS!

    This is the first time that I have trimmed these cases and the starting length was approximately 2.025". I hadn't noticed any loss in accuracy nor any other issues with these cases the previous two times that I had shot them but cut them anyway because "it was the right thing to do."

    Now that I have wasted three hours of my life trimming these cases I feel obligated to ask: what happens if your rifle cases are too long? What kind of issues can I expect to see? :dunno:
     

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  2. Hoser

    Hoser
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    The end of your chamber can act like a crimp die and crimp the case into the bullet. However it is a crimp die that wont let go and pressures skyrocket.

    Bring your brass down to my place and you can use my 1050. 300 rounds is maybe 10 minutes...
     

  3. cysoto

    cysoto
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  4. F106 Fan

    F106 Fan
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    The Hornady Case Prep station will do a pretty good job as well. It will also clean the primer pocket and brush the inside of the neck. It works fine for a few dozen cases. Not so good for a thousand .223s. I don't bother cleaning the primer pocket and neck for AR ammo.

    For large batches, a Dillon 650 with trimmer is the way to go. You can resize and trim about 1400 cases per hour. Clearly, Hoser's 1050 will do them just as fast, if not as faster, but I'm not much into changing the setup on my 1050.

    Richard
     
  5. unclebob

    unclebob
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    Yes heard of it, have not tried it. But understand it works great. If I was to get back into rifle reloading I probably would get one.
     
  6. norton

    norton
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    I have one. Its a great tool, if a little pricey. Looks good mounted on your bench too.
     
    #6 norton, Apr 20, 2014
    Last edited: Apr 20, 2014
  7. WeeWilly

    WeeWilly
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    Most guns have a little leeway in the leade to accommodate longer than spec brass, but as Hoser points out, at some point (a point you may not exactly know), the case mouth will be slightly clamped, the bullet won't be released and you will likely break something.

    There are a number of power trimmers like the WFT out there, Possom Hollow, CTS, etc. I think they all work well enough for volume reloading. I like the Giraud.
     
    #7 WeeWilly, Apr 20, 2014
    Last edited: Apr 20, 2014
  8. BC Dan

    BC Dan
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    After doing several hundred .223 brass on a hand lathe-style trimmer, I bought a Giraud. My hands thank me! Now I look forward to trimming. Wow, talk about fast and accurate. It's spendy, but very well made. It's been an awesome purchase for me.
     
  9. fredj338

    fredj338
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    You don't have to trim your cases until they reach max length, usually 3-4 FL sizings. I like my Hornady case prep center. I just work in 50rd batches, then use an x die for 223 & 308.
     
    #9 fredj338, Apr 20, 2014
    Last edited: Apr 20, 2014
  10. Gunnut 45/454

    Gunnut 45/454
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    As been stated already, let your brass grow too much and you'll run into pressure spikes! Never a good thing! If your rifle has a tight chamber it could be catastrophic.
    I trim my brass, one to get better accuracy, two to get better fit in the chamber, feeding.:supergrin: Especially if your using the rounds in a semi-auto.:supergrin:
     
  11. Clusterfrack

    Clusterfrack
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    What gun are you shooting these from? I neck size only for .308 and .260 bolt guns.
     
  12. cysoto

    cysoto
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    It's a .308 bolt rifle; a Savage.
     
  13. Clusterfrack

    Clusterfrack
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    Are you full length sizing each time? You might try just a neck sizer, as long as you're going to be firing your brass in the same chamber.