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#1 | |||
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Member
Join Date: Aug 2008
Posts: 406
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If new brass fits in the chamber of your gun should it be full length sized or just neck sized? Not full length sizing new brass may get one more reloading out of it. Just a thought.
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"When an injustice is not properly addressed the memory of that injustice lives on." -- Unknown |
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#2 | |||
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Scribe
Join Date: Dec 2008
Posts: 4,206
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#3 | |||
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Beware of Dog
Join Date: Mar 2013
Location: AA Co
Posts: 3,784
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Depends on the gun for me... a bolt action, fireformed brass only gets neck sized. A gasser gets a full length resize, but just enough to set the shoulder back about .003-.005". Both will extend the life of your brass, but only a teeny bit in many cases. New factory brass gets full length sized and fireformed, then as above for me..
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MSI Supporting member NRA Life Member Twelfth Precinct Pistol and Archery Club/AGC Archery and Firearm Fanatic |
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#4 | |||
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Beware of Dog
Join Date: Mar 2013
Location: AA Co
Posts: 3,784
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I have rarely found the need. It does depend a little on your source for brass. (was it fired in a SAW?)
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MSI Supporting member NRA Life Member Twelfth Precinct Pistol and Archery Club/AGC Archery and Firearm Fanatic |
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#5 | ||
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Senior Member
Join Date: Feb 2013
Posts: 15,802
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OP asked about NEW brass.
I do not size new pistol brass. For rifle brass, it depends. I do not size new Lapua brass, as it is very consistent new. Other brands may need to be neck sized when new to get consistent neck tension. For plinking ammo, I just load it. |
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#6 | |||
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Oddball caliber fan
Join Date: Aug 2010
Location: Northern Virginia
Posts: 15,523
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All new brass needs full length resizing. Brass gets squeezed and case mouths deform during transit. Just do it.
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When you can't list all of your guns in your signature because you ran out of characters, you might be a redneck. Jim |
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#8 | ||
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Senior Member
Join Date: Aug 2011
Location: MD
Posts: 3,994
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I will say full length size all brass, even new.
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#9 | |||
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Senior Member
Join Date: Jul 2016
Location: The heart of the Delmarva Penninsula
Posts: 2,036
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I never full length resize new brass for rimmed cartridges, usually the chamber allows for a substantial amount of cartridge head-space from the onset. As long as bullet tension is good I just load. For rimless brass in semi auto guns I like to make sure full length sizing has been done and have a look at the depth of primer pockets for safety purposes and the same for neck tension. For bolt guns I just check in a case gauge and same for neck tension unless I'm loading for something with a close to minimum spec chamber like a savage.
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#10 | |||
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Senior Member
Join Date: Sep 2011
Location: Fairfax, VA
Posts: 3,444
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I don't do an actual full length resize for my .30/06 that I shoot in my 03 and M1. I only resize far enough for the cartridge to chamber easily. I start with my die a quarter turn backed off and slowly lower it while testing cases until I get a setting that chambers. There is a slight gap of light between the shell holder and die when sizing.
I would simply size the brass however you'll be doing it in subsequent loadings, whether it's full length, partial full length, or neck sizing. That's just a matter of convenience. New brass should be in SAAMI specs, so neck sizing would probably be fine though. |
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