Author Topic: Blown case removal from chamber, help  (Read 801 times)

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Offline persistentprogrammer

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Blown case removal from chamber, help
« on: March 03, 2008, 05:59:07 AM »
Hi, I fired off a round in my 350 Rem Mag and the case split/seperated just forward of the belt. It was definitely due to case fatigue and cheap brass, lesson learned!

What's the best way to remove the rest of the case from inside the chamber?

T/C Encore rifle.

Thanks

Offline iiranger

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« Reply #1 on: March 03, 2008, 06:32:37 AM »
#1) FIRST, while you cool off, let the gun/barrel cool off too. Coldest freezer you can find. Put it in for a while. Several hours. Over night.  SOMETIMES, this will cause the metals to shrink enough --away from each other--  to let the case just fall out of the chamber. Or you might have to push on it with something gently or ??? Shot of WD 40 or other like spray before you cool it might help... or after...  The super speed method is to run a liquid gas down the barrel and let it evaporate and cool. Propane. Butane. These you could pour onto the case section to cool it more/quicker...
#2). If this doesn't work, a healthy brass brush... a cleaning brush from the muzzle might catch enough brass to force it out. Or an oversize, shotgun brush or the like, into the brass to "grip" it.

OBVIOUSLY, the idea is to work the brass out without gouging the chamber and making huge problems. BE GENTLE and careful.

The final method, short of having a machinist "machine" it out, [EXPENSIVE], is to "cast" the chamber with a metal that will adhere to the case and bring it out when tapped out. Cerrosafe has done the deed many, many times. I guess there is a "babbit" that works. Pure or alloy lead could be used (with care). Sulphur would be awful flimsy.  If you have unbelieveable finger skill, you might solder a wire or piece of metal to the sides to push on with a rod down the barrel. (I don't.)

The military makes and issues a "remover" that goes in ahead of the neck of the brass and expands when the threaded area is screwed in with a cleaning rod, but don't know of one of these in .35. Usually #1 or #2 get it quick... Brownells might.

As you indicate, you should be headspacing on the shoulder to lenghten brass life. Only the origina H&H's need the belt. Should be a long time before this happens again. Luck.


Offline Steve P

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Re: Blown case removal from chamber, help
« Reply #2 on: March 05, 2008, 09:00:19 AM »
Use a one size larger bore brush, slide it up in the case, and pull it out.  With an encore, should be a piece of cake.  I shoot silhouette.  I always have a supply of bore brushes and bore mops in my box in case this happens during a match.

Steve  :)
"Life is a play before an audience of One.  When your play is over, will your audience stand and applaude, or stay seated and cry?"  SP 2002

Offline gunnut69

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Re: Blown case removal from chamber, help
« Reply #3 on: March 05, 2008, 12:59:56 PM »
Using a brass bristle brush a bit large for the inside of the casing that remains in the chamber. Insert it, installed on a rod, into the case from the rear of the action. The bristles will be pushed down and pointed back and this will make it grip the inside of the case. Which should be removed as the brush is pulled outward..
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Offline Val

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Re: Blown case removal from chamber, help
« Reply #4 on: March 06, 2008, 02:29:33 AM »
A gun parts supplier such as Brownell's sells stuck case extractors for various calibers.
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Offline gunnut69

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Re: Blown case removal from chamber, help
« Reply #5 on: March 06, 2008, 05:58:29 AM »
I would avoid any oil at all and WD40 most of all. Oil will create a liquid seal and the resulting suction will not make remove easier. Also WD40 dries/hardens to a varnish over time. This will act as a glue! Generally freezing and a brush larger than the inside of the case will work fine. A stuck case remover is a great solution if you want to wait and on is made for you caliber. I have also used a round file as a remover. The ends are tapered and can be screwed into the interior of the case. This bite allows the case to be extracted. Obviously this is a more extreme solution and the other suggestions should be tried first. Be careful as a file can definitely damage the chamber if care is not taken.. Another alternative is a pipe tap. A properly sized tap can be screwed into the broken case and the remains then removed. It is almost impossible the pry or chisel the case from the chamber. The result of such efforts is almost always a damaged chamber.
gunnut69--
The 2nd amendment to the constitution of the United States of America-
"A well regulated militia, being necessary to the security of a free state, the right of the people to keep and bear arms, shall not be infringed."

Offline whiteoper

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Re: Blown case removal from chamber, help
« Reply #6 on: March 06, 2008, 02:19:48 PM »
I am not a gunsmith so this maybe a bad idea.  When I had case head seperation in my 303 brit the oldtimer said firmly run anouther round inside the brass and then extrac.  This did work with the old war horse but it may not be advisable.