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#202863 - 10/22/19 01:33 PM Re: 358 JDJ Rounds Will Not Chamber [Re: billa]
JDK
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Registered: 01/18/04
Posts: 356
Loc: Texas Hill Country

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Thanks Bill. No crimping. .379 slides right in without a bullet. .384 with a bullet and it stops in the exact same place no matter where the bullet is seated. It seems it has to be the chamber neck or case neck. I don?t have a puller, but I?ll seat a slug in an empty case and pull it with pliers to see what happens.


Edited by JDK (10/22/19 01:33 PM)
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John

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

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#202869 - 10/22/19 08:48 PM Re: 358 JDJ Rounds Will Not Chamber [Re: JDK]
Buck_358
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Registered: 11/29/12
Posts: 137
Loc: SE Indiana

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My 358 JDJ is a rechambered factory 35 Rem TC, SSK did the work in 1995.
I took one each (444 Remington / 444 Starline) and resized them first in a 444 Marlin sizing die to square them up. For this exercise I screwed the 358 JDJ sizing die in the press so it touches the shell holder at the very top of the up stroke. That said, I have my die set so my cases receive a crush fit when chambered on the closed action.

Where are you setting up your die?

Both cases were trimmed to a length of 2.220. I used a Speer 180 grain flat point seated to the cannular grove.
Using ball micrometer, dial indicator, calipers etc. here are my numbers.

Starline 444 brass ? 358 JDJ
Neck thickness = 13.3 thousands
Neck diameter = .3801 inches
With the bullet COL = 2.779 inches
Neck diameter with bullet = .3848 inches

Remington 444 brass ? 358 JDJ
Neck thickness = 12.6 thousands
Neck diameter = .3768 inches
With the bullet COL = 2.777 inches
Neck diameter with the bullet = .3864 inches

With the Barrel OFF the action and held in my bench vise - BOTH rounds chamber freely with no resistance.

Let me know you need anything further.
D..
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#202870 - 10/22/19 09:25 PM Re: 358 JDJ Rounds Will Not Chamber [Re: Buck_358]
JDK
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Registered: 01/18/04
Posts: 356
Loc: Texas Hill Country

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Thanks Buck! I appreciate all the info.

I met up with Mech8 this afternoon. He was kind enough to let me try his ammo and vis versa. His rounds, which fit his SSK barrel, will NOT fit my SSK chambered barrel. My loaded round fits his barrel just fine. I?m sending the barrel back to SSK tomorrow so they can figure it out. Mech8 and I were left with no doubt that my chamber is the culprit. Exactly what is wrong with it, we can?t t say with certainty, but it seems to be the neck. It has nothing to do with the bullet or how it?s seated and it?s not related to the case body or rim. Thanks again for the help everyone. I?ll update y?all once I know one thing for sure.
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#202981 - 10/29/19 02:26 PM Re: 358 JDJ Rounds Will Not Chamber [Re: JDK]
JDK
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Registered: 01/18/04
Posts: 356
Loc: Texas Hill Country

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Talked to Brian today and got the answer. It's an Armor Alloy barrel. T/C plated those barrels inside and out. So, when SSK cut the chamber, it peeled/was rough in a small amount where the plating was removed during the reaming. Brian said that's unusual, but can happen. That kept my rounds from chambering fully. He is going to polish the throat to smooth that transition area down a bit. Hopefully I'll have it next week and can get to load development done. Thanks!
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#202982 - 10/29/19 03:06 PM Re: 358 JDJ Rounds Will Not Chamber [Re: JDK]
karl
addict


Registered: 01/12/15
Posts: 683
Loc: Minnesota

content Online
Interesting! Thanks for filling us in.

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#202985 - 10/29/19 05:12 PM Re: 358 JDJ Rounds Will Not Chamber [Re: JDK]
Mech 8
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Registered: 08/30/11
Posts: 223
Loc: San Antonio, TX

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I knew something didn't look right down there. Glad to hear he is going to square things away for you.

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#202990 - 10/29/19 08:20 PM Re: 358 JDJ Rounds Will Not Chamber [Re: Mech 8]
billa
old hand


Registered: 02/12/05
Posts: 855
Loc: Central PA

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I am glad the mystery is solved. Hopefully you will be on the range soon sending big lead down range.
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Handgun hunter since 1979 - haven't used a rifle since!
HHI member #992, NRA, SCI.

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#202991 - 10/29/19 08:35 PM Re: 358 JDJ Rounds Will Not Chamber [Re: billa]
45MAN
veteran


Registered: 08/13/17
Posts: 1486
Loc: brownsville, texas

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I HAVE BEEN WAITING "FOR THE REST OF THE STORY", GLAD IT SHUD HAVE A HAPPY ENDING. WITH METAL IT DOES NOT TAKE MUCH NOT TO FIT. AT 75, AND WITH PLENTY OF REVOLVERS STILL TO PLAY WITH, IT IS PROBABLY TOO LATE FOR ME TO GET INTO A 358 JDJ BUT I HAVE LONG ADMIRED IT.
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#203018 - 10/31/19 08:41 AM Re: 358 JDJ Rounds Will Not Chamber [Re: 45MAN]
popo
newbie


Registered: 09/26/09
Posts: 49

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Glad it was fixable for you. Let us know how it shoots. Have took out several deer and hogs with mine.

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#203071 - 11/01/19 11:18 PM Re: 358 JDJ Rounds Will Not Chamber [Re: popo]
Chance Weldon Administrator
Distinguished Expert


Registered: 09/20/13
Posts: 4373
Loc: Martin, Tennessee

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Glad to see you got it taken care of!
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