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Old March 10, 2012, 09:39 AM   #1
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reloading 223

I am having a problem when I resize and decap 223 remington cases. For some reason about 10 % of the cases are coming out of the die with a bullet hole that is oversized so that the bullet falls down into the case. This is a new set of dies from RCBS. Can someone advise what I might be doing wrong?
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Old March 10, 2012, 09:47 AM   #2
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Best to post your question in the "Handloading, Reloading, and Bullet Casting" section of the forum.
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Old March 10, 2012, 09:47 AM   #3
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You will get a better response from the reloading section. Mods may move or close this post.
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Old March 10, 2012, 10:18 AM   #4
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Measure the expander. Should be .222" or smaller. Is the die making contact with the shell holder on sizing?
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Old March 10, 2012, 10:44 AM   #5
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Fl or neck sizer?

Bushing die?

The only time I've had this happen with a standard fl die was with fc brass.
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Old March 10, 2012, 10:49 AM   #6
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223 reloading

FL dies
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Old March 10, 2012, 10:56 AM   #7
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Change brass.
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Old March 10, 2012, 11:13 AM   #8
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Give the die about another quarter turn down, and then try sizing one of the cases that has no neck tension. Use a bullet to see if it gains any neck tension. Sometimes dies need a bit of cam over to get good neck tension.

If that fails to work then remove the decapping pin/expander. Size the round, then afterwards reinsert the expander, run it to just inside the neck enough to expand it. See if there is enough tension in the neck. If not then contact RCBS, and let them know what your problem is. They will more than likely mail you a new expander button.

It could also be a brass thing if they are all the same head stamp. Some brass has more spring back than others.
No matter how many times you do it and nothing happens it only takes something going wrong one time to kill you.
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Old March 10, 2012, 12:20 PM   #9
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Last edited by SQUAREKNOT; March 11, 2012 at 10:42 PM. Reason: like the wife says I didn't listen
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Old March 11, 2012, 12:39 PM   #10
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What is happening is the brass you are using has a thin wall. The neck of the brass where the bullet seats is too thin for that brass.

I use a neck sizer with replaceable bushing for BR shooting. On new .223 brass I use .246 neck bushing and after I shoot it approximately 8 times then I have to use a .243 neck bushing to get the correct neck tension to seat the bullet. When the case "lengthens" and must be trimmed down. The "lengthening" is because the neck wall stretching causing the case to thin.

Since you have a Full length sizer, you do not have the option of using neck bushings. So you cannot do any adjustments on your part. If they are RCBS dies, then they are within spec and it is not the dies that you are having problems with.

Long story short.
Use different brass or a better quality.
I like winchester with has a .010 neck thickness when new. or even better use Hornady brass. it has an average neck thickness of .014 which will hold the bullet more firmly and will not allow the bullet to slip. plus you will be able to get more reloads with hornady brass.
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Old March 11, 2012, 07:39 PM   #11
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Thanks- I have some new brass that I will try.
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