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#3174797 - 02/24/13 05:43 PM collapsed shoulders?
deerkiller300wsm
6 Point


Registered: 10/22/08
Posts: 564
Loc: maryville,tn

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What causes this in big fat cartridges with steep necks? Happened 3 times to me today on my 300 Wsm
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#3174833 - 02/24/13 06:12 PM Re: collapsed shoulders? [Re: deerkiller300wsm]
hunter0925
8 Point


Registered: 01/21/13
Posts: 1092
Loc: TN, Rhea,

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Were you seating the bullet when it happened? I have had it happen to a few of mine on my 300 and 325 and believe it is due to the case being stretched a little more than others. I backed the die out about 1/8 turn and then set my plunger a little deeper so that OAL is still correct. I was also able to resize the same casings and fix the shoulder and still reload them.
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We the unwanted, do the unthinkable, for the ungrateful.
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#3174844 - 02/24/13 06:16 PM Re: collapsed shoulders? [Re: hunter0925]
deerkiller300wsm
6 Point


Registered: 10/22/08
Posts: 564
Loc: maryville,tn

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Yes. Setting the bullet
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#3174853 - 02/24/13 06:22 PM Re: collapsed shoulders? [Re: deerkiller300wsm]
hunter0925
8 Point


Registered: 01/21/13
Posts: 1092
Loc: TN, Rhea,

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I would say that is your problem. I am no expert and someone may say that I am wrong but that is how I corrected my problem. My 7mm-08 was the worst but I blame that on the Hornady dies. You can try it and see if it works. If you are using a roll crimp it will effect the crimp but I soley use neck tension through sizing instead of a crimp on my rifles. Hope it helps man.
_________________________
We the unwanted, do the unthinkable, for the ungrateful.
In Each Other We Trust.

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#3174864 - 02/24/13 06:30 PM Re: collapsed shoulders? [Re: hunter0925]
deerkiller300wsm
6 Point


Registered: 10/22/08
Posts: 564
Loc: maryville,tn

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Thanks for the advice guys!
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#3174881 - 02/24/13 06:47 PM Re: collapsed shoulders? [Re: deerkiller300wsm]
Jcalder
8 Point


Registered: 09/18/12
Posts: 1050
Loc: Tennesse

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Did you chamfer the case after trimming? Any time I trim or use brass for the first time from factory loads I chamfer it.
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#3174942 - 02/24/13 07:35 PM Re: collapsed shoulders? [Re: Jcalder]
deerkiller300wsm
6 Point


Registered: 10/22/08
Posts: 564
Loc: maryville,tn

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Yes I did
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#3174943 - 02/24/13 07:35 PM Re: collapsed shoulders? [Re: Jcalder]
KPH
10 Point


Registered: 08/06/05
Posts: 3633
Loc: Hendersonville Tenn

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I am thinking you have your die sat to low in the press. reread the instructions. I may be wrong but that will do it.
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#3175040 - 02/24/13 08:37 PM Re: collapsed shoulders? [Re: KPH]
Jcalder
8 Point


Registered: 09/18/12
Posts: 1050
Loc: Tennesse

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I would agree then with the die set too low.
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#3176134 - 02/25/13 07:09 PM Re: collapsed shoulders? [Re: Jcalder]
DaveB
10 Point


Registered: 09/03/08
Posts: 3874
Loc: Shelby County

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Yep, die is set wrong. If you didn't chamfer, you would see the case neck deformed first, particulary if using flat base bullets. Back the die completely out and re-read instructions and be sure to follow them exactly.

I still read my RCBS instructions every time. I wiped out about 50 300 Winmag cases by not setting the FL die correctly.

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#3176155 - 02/25/13 07:22 PM Re: collapsed shoulders? [Re: DaveB]
deerkiller300wsm
6 Point


Registered: 10/22/08
Posts: 564
Loc: maryville,tn

content Online
Ok. Will do. Thanks guys. I have never loaded 300 Wsm before. Usually stick to 3006 and 44
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#3176244 - 02/25/13 08:47 PM Re: collapsed shoulders? [Re: deerkiller300wsm]
KPH
10 Point


Registered: 08/06/05
Posts: 3633
Loc: Hendersonville Tenn

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It never hurts no matter how long we have been doing something is to go back to the basis.
_________________________
when I die please don't let the wife sale my guns for what I told her I paid for them

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#3176927 - 02/26/13 01:55 PM Re: collapsed shoulders? [Re: KPH]
Hunter 257W
10 Point


Registered: 10/04/12
Posts: 3084
Loc: Franklin County

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Once you readjust the seating die per the intructions and tighten the jam nut, I'd verify that you have it set right by running an empty case in the seating die with no bullet. This will take the possibility of the bullet hanging on the case mouth out of the equation and lets you prove the die is adjusted correctly.

When I 1st read your post, I thought you were talking about grease dents on the shoulder from too much sizing lube. Steep shoulder angles tend to make that worse too.

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