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Rifles, Reloading, Optics, Equipment
Gunsmithing
Broken off case
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<blockquote data-quote="Dgd6mm" data-source="post: 971929" data-attributes="member: 12044"><p>The culprit here is from the FL die being set up improperly and causing excessive shoulder bumping. When you set the shoulder back to far and fire the case it stretches the brass and thins the case down near the web because of brass flowing up the wall towards the shoulder. Every reloader should own a set of Hornaday Headspace tools. Instuctions come with the tools and I'm sure you can do a search and read up on it. You can also check the brass you have with a paperclip. Straighten a clip out and turn a small 90 degree on one end, stick it in the mouth of the case and push it down to the head of the case. Turn the 90 degree part against the wall at the head and drag it towards the mouth of the case, if the wall is thinning you will feel it where it is starting to get thick again. That is where you will have a headcase separation. Go all the way around the case (360 degrees). If you feel this do not reload that case, toss it. The ones that show no signs of this can be reloaded. I have shot many a .300 RUM using Remington brass without 1 headcase separation. If you find any that are bad use them to set your die then throw them away.</p></blockquote><p></p>
[QUOTE="Dgd6mm, post: 971929, member: 12044"] The culprit here is from the FL die being set up improperly and causing excessive shoulder bumping. When you set the shoulder back to far and fire the case it stretches the brass and thins the case down near the web because of brass flowing up the wall towards the shoulder. Every reloader should own a set of Hornaday Headspace tools. Instuctions come with the tools and I'm sure you can do a search and read up on it. You can also check the brass you have with a paperclip. Straighten a clip out and turn a small 90 degree on one end, stick it in the mouth of the case and push it down to the head of the case. Turn the 90 degree part against the wall at the head and drag it towards the mouth of the case, if the wall is thinning you will feel it where it is starting to get thick again. That is where you will have a headcase separation. Go all the way around the case (360 degrees). If you feel this do not reload that case, toss it. The ones that show no signs of this can be reloaded. I have shot many a .300 RUM using Remington brass without 1 headcase separation. If you find any that are bad use them to set your die then throw them away. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Gunsmithing
Broken off case
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