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#202769 - 10/20/19 02:31 PM 358 JDJ Rounds Will Not Chamber
JDK
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Registered: 01/18/04
Posts: 363
Loc: Texas Hill Country

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I've made it to the point where today I dropped my first power charge and seated a 220 grain Speer Flat Point into the case. I began by seating the bullet to the bottom of the neck, as recommended. The round would not chamber. I slowly seated it deeper and deeper with no effect. The round sticks out of the chamber maybe an 1\8" to 1\4". I found I could push the round in a tad further with my finger, but then had to force extraction. I don't see rifling Mark's on the ogive, it looks like I see a slight ring mark maybe. The case mouth did seem rougher after this ordeal.

I'm at a loss. The formed cases alone seemed to fit perfectly and the action closed easily and completely. If I had to guess, I'd say seating the bullet into the case expanded the neck enough to keep it from chambering fully. Anyone have any ideas? Thanks!
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John

But for the grace of God, there, I go.

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#202770 - 10/20/19 03:05 PM Re: 358 JDJ Rounds Will Not Chamber [Re: JDK]
JDK
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More info: The formed cases measure .379 at the outside of the neck. The loaded round measures .385 on the outside of the neck. I'm going to try backing the seating die body out more to see if I could be crushing the case a bit. I read about that possibility, so it's worth a shot.
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John

But for the grace of God, there, I go.

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#202772 - 10/20/19 03:41 PM Re: 358 JDJ Rounds Will Not Chamber [Re: JDK]
JDK
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Registered: 01/18/04
Posts: 363
Loc: Texas Hill Country

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No good. It's not the bullet length or die, it's the neck diameter. I backed the die out and tried again. With a bullet just seated maybe 1\4", the outside neck diameter grows from .379 to .385 and appears to be just a hair too big for the chamber's neck dimensions. The bullets measure a perfect .358. Unless something else comes up, I'll email JD and see what he says.


Edited by JDK (10/20/19 03:44 PM)
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John

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#202775 - 10/20/19 05:10 PM Re: 358 JDJ Rounds Will Not Chamber [Re: JDK]
Embalmer883
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Registered: 10/07/12
Posts: 39
Loc: MS Gulf Coast

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Try taking out the inside of the sizing die and running it back through after loaded.

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#202777 - 10/20/19 05:57 PM Re: 358 JDJ Rounds Will Not Chamber [Re: Embalmer883]
JDK
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It was worth a shot, but that round wouldn't even consider going into the neck portion of that die. Obviously, the neck is just too tight. I just don't know if the chamber is to tight or the brass is too thick. I even trimmed the cases to a uniform 2.23" ,mainly to clean up the case mouths.
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John

But for the grace of God, there, I go.

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#202779 - 10/20/19 05:59 PM Re: 358 JDJ Rounds Will Not Chamber [Re: JDK]
45MAN
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Registered: 08/13/17
Posts: 1712
Loc: brownsville, texas

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WHO CHAMBERED THE BARREL? MAYBE THE CHAMBER IN THE NECK AREA IS TOO TIGHT?
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"ADAPT OR DIE". I USE ALL CAPS, NOT BECAUSE I AM YELLING, BUT BECAUSE IT IS AN OLD HABIT FROM MY ARMY DAYS, PLUS IT IS EASIER TO TYPE AND READ.

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#202780 - 10/20/19 06:02 PM Re: 358 JDJ Rounds Will Not Chamber [Re: 45MAN]
45MAN
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Registered: 08/13/17
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Loc: brownsville, texas

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ALSO, USE A VLD INSIDE NECK CHAMFER TOOL BEFORE SEATING THE BULLET.
_________________________
"ADAPT OR DIE". I USE ALL CAPS, NOT BECAUSE I AM YELLING, BUT BECAUSE IT IS AN OLD HABIT FROM MY ARMY DAYS, PLUS IT IS EASIER TO TYPE AND READ.

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#202782 - 10/20/19 06:23 PM Re: 358 JDJ Rounds Will Not Chamber [Re: 45MAN]
JDK
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Registered: 01/18/04
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Loc: Texas Hill Country

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It is a newly SSK rechambered factory TC barrel. I chamfered inside and out. It's a mystery at this point.
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John

But for the grace of God, there, I go.

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#202785 - 10/20/19 07:31 PM Re: 358 JDJ Rounds Will Not Chamber [Re: JDK]
Pa. Mike
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Registered: 07/10/09
Posts: 116
Loc: South Central Pa.

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I think your neck was cut too tight. I had three separate SSK barrels which had to have the neck opened up slightly and they shot fine after that. I would send it back to SSK and ask them to examine it. They have a good reputation for standing by their work. Just my two cents worth.

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#202787 - 10/20/19 08:18 PM Re: 358 JDJ Rounds Will Not Chamber [Re: Pa. Mike]
JDK
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Registered: 01/18/04
Posts: 363
Loc: Texas Hill Country

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I believe you may be correct. I sent JD an email. I have no doubt they?ll get me fixed either way! Thanks for the info guys!
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John

But for the grace of God, there, I go.

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