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Primer backing out

Discussion in 'Handloading and Reloading' started by deadeye dick, Jan 21, 2020.

  1. deadeye dick

    deadeye dick Member

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    Was shooting my new Cattlemen .45 and all of a sudden the cyl. jammed. Right away I thought here we go, another bad out of the box gun. well it happened to be a primer that had backed out and wedged itself against the breech making it impossible to turn. I very carefully removed the base pin and slid out the cyl. This is new Winchester brass and I know the primer was seated properly. Just wondering if this is just a fluke. This has never happened in my BH.357 or any of my pistols.
    What are your thoughts?
     
  2. troy fairweather

    troy fairweather Member

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    Normally caused by excessive head space, how much did it move.
     
  3. Blue68f100

    Blue68f100 Member

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    It can happen with very low pressure rounds, mouse fart loads too. Happens when there is not enough pressure to push the brass back against the breach face to re-seat the primer.
     
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  4. Arkansas Paul

    Arkansas Paul Member

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    What was your load?
     
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  5. frankmako

    frankmako Member

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    could be low power loads.
     
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  6. edwardware

    edwardware Member

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    Revolvers do this every single shot, without fail; what didn't happen this time is sufficient pressure to seat the brass back onto the slightly unseated primer.

    You had a low-pressure round.

    The only way out for low-pressure novelty rounds is to expand the flash hole sufficiently to reduce primer backpressure; once done, the brass is dedicated.
     
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  7. hk940

    hk940 Member

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    This explains the problem I was having with some low power loads in my .44 mag. I loaded up some cases with #8 shot for use on Carpenter bees, that are a big problem around the house. I never had a problem out of my TC, but my Redhawk would lock up after a shot. Thanks for the info.
    How much should the flash hole be opened up?
     
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  8. edwardware

    edwardware Member

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    I've outlined my rice-shot carpenter bee load here. It does require drilling flash holes, but won't damage the siding.

    I drill them out as large as possible while leaving a rim for the primer anvil to seat against.
     
  9. rfwobbly

    rfwobbly Member

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    Research and make a simple carpenter bee trap. Hang it on the cooler side of the house and you'll wipe out the entire tribe within a month.

    https://www.wikihow.com/Build-a-Carpenter-Bee-Trap

    And this will end up being ever so much better than shooting at your house.
     
  10. hk940

    hk940 Member

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    I got one of those bee traps, not one bee all summer, I did watch a wasp go in crawl around then crawl out and fly away!
    I will have to try the rice load, even though I don't shoot at the house.
     
  11. mdi

    mdi Member

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    I've never been stung by a carpenter bee. We had a semi-dead tree on our patio and the carpenter bees made a nest/hive in the dead part of the tree. The bees would fly around but never light on a person even when I pushed a piece of mono fishing line down the entrance hole (but they did start buzzing quite loudly...:p). Never tried "Carpenter Bee Trap Shooting"...

    I did experience primer set back with my 123 gr., .432" ball and a dusting of Bullseye loads when fired in my 44 Mag. SBH. Very, very light loads w/no recoil or muzzle blast to speak of.
     
  12. deadeye dick

    deadeye dick Member

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    Took the round apart to check data. this is what I found: 200 Gr. LRNFP 7.6 Gr. Greendot Primer backed out approx..015 to.017 COAL1.640. New Winchester case, Wolf primer.
     
  13. Blue68f100

    Blue68f100 Member

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    Interesting, I will have to give that a try. I ended up sealing the cedar siding on my house with 2 coats of primer and 2 top coats. They have not bothered it since.
     
  14. deadeye dick

    deadeye dick Member

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    Let's get back on track please. Does this sound like a light load?
     
  15. FROGO207

    FROGO207 Member

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    You take ALL the fun out of things. Some things are ment to be used as targets.;)
     
  16. Farmer Dave

    Farmer Dave Member

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    I'm assuming you're asking about .45 Colt loads, in which case your load isn't really what I'd call a "mouse-fart" load given that Meister's load manual lists 7.6 g of Green Dot as a "max" load under a 250 grain bullet (.45 Colt), but these are Cowboy Action loads and not anywhere near a hot load at all. That said, they should still work without pushing your primers out. If it were me, I'd try upping the load to 8 grains and see if the problem goes away. If it doesn't then there's something else going awry. That amount of Green Dot ought to be plenty snappy in .45 Colt to get the primers re-seated.

    Note: Speer Reloading Manual #10 (old) gives a load range for Green Dot under a 200 grain/.452" cast semi-wadcutter at 7.3 - 8.3 g (velocity 844 - 967).
     
  17. Farmer Dave

    Farmer Dave Member

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    Now, back to those bee-killer rounds...those sound like fun...:p
     
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