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4/26/2015 2:14:04 PM EDT
I have some once fired LC-11 5.56 brass that was shot out of my AR
I plan to reload and shoot this out of the same AR Do I need to full length case resize this brass? Or can I just neck size them?
Thanks
4/26/2015 2:38:52 PM EDT
[#1]
For brass fired from an automatic rifle like an AR, you'll want to full length size.



Neck only sizing is for bolt actions when you plan to re-use the brass in the same rifle.
4/26/2015 2:45:43 PM EDT
[#2]
I would full length resize.
4/26/2015 7:08:02 PM EDT
[#3]
You have to full length resize. The chambers on an AR are not near as tight as a bolt gun so that they feed reliably. You'll need to bump the shoulders back .002-.003.
Also remember that you'll have to remove the primer crimp on all mil brass before you can re-prime them.
4/26/2015 8:08:24 PM EDT
[#4]
Quoted:
I have some once fired LC-11 5.56 brass that was shot out of my AR
I plan to reload and shoot this out of the same AR Do I need to full length case resize this brass? Or can I just neck size them?
Thanks
View Quote



http://www.exteriorballistics.com/reloadbasics/gasgunreload.cfm
4/26/2015 10:58:18 PM EDT
[#5]

Quoted:


I have some once fired LC-11 5.56 brass that was shot out of my AR

I plan to reload and shoot this out of the same AR Do I need to full length case resize this brass? Or can I just neck size them?

Thanks
View Quote
Yes FL resize.

 



Please do some reading at the top of the page. Will answer a lot of questions.




Look for the "How to load 223" series in Tutorials.
4/26/2015 11:04:47 PM EDT
[#6]
Full lengh sizing dies are required.  You should get the standard dies.  You do not need the small base version.  Some semiauto rifles need small base dies.  The 5.56 chamber AR 15 does not.
4/27/2015 8:28:02 AM EDT
[#7]
Quote History
Quoted:
Full lengh sizing dies are required.  You should get the standard dies.  You do not need the small base version.  Some semiauto rifles need small base dies.  The 5.56 chamber AR 15 does not.
View Quote


^^^This^^^
4/27/2015 10:07:58 AM EDT
[#8]
Agreed.  Any brand FL sizer should work fine for you.  

We had a thread on full length vs. small base a few weeks ago, that got some heat generated.  

While you do need a full length sizer die I am in the camp that you do not need a small base sizer die for the AR UNLESS you have a problem.  The SB dies sizes the brass to the smallest acceptable dimensions for the caliber.  For many rifles it's an excessive working of the brass.
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