Flat area on reloaded 308 cases

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All handloading data posted on Full-Bore UK from 23/2/2021 must reference the published pressure tested data it was sourced from, posts without such verification will be removed.
Any existing data without such a reference should be treated as suspect and not used.

Use reloading information posted here at your own risk. This forum (http://www.full-bore.co.uk) is not responsible for any property damage or personal injury as a consequence of using reloading data posted here, the information is individual members findings and observations only. Always verify the load data and be absolutely sure your firearm can handle the load, especially older ones. If in doubt start low and work your way up.
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Yossarian

Flat area on reloaded 308 cases

#1 Post by Yossarian »

Does anyone know what might be causing this, and whether or not it's a sign of the brass failing or some other problem? I've just noticed after the last firing of these (reloaded 5 times) It's norma brass and has mostly been loaded with 45gr of N140. I neck size only, and it does look ok after I resize. No cracks I can see on the neck. Is it likely to be something happening on extraction? Any advice appreciated.
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20series
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Re: Flat area on reloaded 308 cases

#2 Post by 20series »

how do you eject the cases??? if they are flying off and landing on a hard surface it might do that.

Next time try and examine after ejecting slowly and removing the case carefully.

Alan
Last edited by 20series on Tue Feb 20, 2018 7:37 pm, edited 2 times in total.
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Daryll
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Re: Flat area on reloaded 308 cases

#3 Post by Daryll »

Yes, its caused by extraction.... you don't say what you're firing it from, but many rifles will cause that.
Its the ejector plunger pushing the case to the right (assuming you have a RH rifle) as it come out of the chamber, and bashing the case against the inside of the action, or on the edge of the ejection port.
Yossarian

Re: Flat area on reloaded 308 cases

#4 Post by Yossarian »

Thanks for the replies. I’m shooting a howa 1500. A mate has also said its during extraction. Guess I’d never noticed it before.
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WelshShooter
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Re: Flat area on reloaded 308 cases

#5 Post by WelshShooter »

This is normal. This also happens during transit of new cases, I've noticed it on virgin 7.62x53R Lapua brass. In your case (pun intended) I would hazard a guess it's due to either deflection on extraction or from hitting a hard surface after extraction.

Just resize it and think nothing of it.
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