Marks around case body - anyone recognise?

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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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rox
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Re: Marks around case body - anyone recognise?

#11 Post by rox »

WelshShooter wrote:
rox wrote:
WelshShooter wrote:would it also require full length sizing in order re-use?
Is there another way? :)

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As opposed to just neck sizing.
Since this brass was initially fired in a different rifle to the next firing, it will definitely need Full Length sizing. Especially since it was initially fired in multiple/various different rifles. It will actually need small base full length sizing. But I'd do the same even if it was initially fired in rifle 'A' and destined to be subsequently fired in rifle 'A'; I gave-up neck sizing a while ago.

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WelshShooter
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Re: Marks around case body - anyone recognise?

#12 Post by WelshShooter »

rox wrote:Since this brass was initially fired in a different rifle to the next firing, it will definitely need Full Length sizing. Especially since it was initially fired in multiple/various different rifles. It will actually need small base full length sizing. But I'd do the same even if it was initially fired in rifle 'A' and destined to be subsequently fired in rifle 'A'; I gave-up neck sizing a while ago.

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Evidently it would've helped if I had noticed the bullet point text under your original pic, whoops. How come you've stopped neck sizing? Did you adjust your full length die to just slightly bump the shoulders back?
rox
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Re: Marks around case body - anyone recognise?

#13 Post by rox »

WelshShooter wrote:How come you've stopped neck sizing?
This calls for some more bullet points!
  • I want to make accurate ammo.
  • FL sized cases are more uniform.
  • FL sized cases allow the case some wiggle room so the bullet can align in the throat (not necessary if you have a perfectly aligned chamber & your rounds have zero runout etc).
  • FL sized case are more reliable (feeding and extraction).
  • I can use the same process regardless or the brass source and intended next use.
  • I can use the same process regardless of number of firings.
  • I can FL just as easily as Neck sizing.
WelshShooter wrote:Did you adjust your full length die to just slightly bump the shoulders back?
Depends a little on the application, but I usually adjust for about 0.002" clearance or 0.002" under chamber min.

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zanes

Re: Marks around case body - anyone recognise?

#14 Post by zanes »

rox wrote:
WelshShooter wrote:How come you've stopped neck sizing?
This calls for some more bullet points!
  • I want to make accurate ammo.
  • FL sized cases are more uniform.
  • FL sized cases allow the case some wiggle room so the bullet can align in the throat (not necessary if you have a perfectly aligned chamber & your rounds have zero runout etc).
  • FL sized case are more reliable (feeding and extraction).
  • I can use the same process regardless or the brass source and intended next use.
  • I can use the same process regardless of number of firings.
  • I can FL just as easily as Neck sizing.
Oddly, I've found virtually exactly the opposite to you in the accuracy and ease of FL versus ease of NS points you raise since switching from FL to NS for routine loading of my .308.

Not bothered about the second and third points you raise as my experience of point one totally trumps them. Not run into reliability issues.
rox
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Re: Marks around case body - anyone recognise?

#15 Post by rox »

zanes wrote:Oddly, I've found virtually exactly the opposite to you in the accuracy and ease of FL versus ease of NS points you raise since switching from FL to NS for routine loading of my .308.

Not bothered about the second and third points you raise as my experience of point one totally trumps them. Not run into reliability issues.
I'm sure the debate will rage on, as it already has for decades. I'm equally sure that it's perfectly possible to get excellent results by either technique. I'm only moderately sure that most of the accuracy world has switched to FL sizing these days. And I can only speculate that if your results with FL sizing were noticeably worse than with neck sizing then something was wrong.

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