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TheFirearmsForum.com
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#1 |
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Member
Join Date: Sep 2009
Posts: 23
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When reloading for .223 and .308 to be used in semi-autos like the AR-15 and M1A, is a full length resizing die adequate or should a small base resizing die be used? Thanks.
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#2 | |
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Member
Join Date: Sep 2009
Location: Denver CO
Posts: 43
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Quote:
![]() In my case I have a couple of 'true' 5.56 chambers (A Colt and a Sabre) and one Wylde chamber that doesn't like brass that's come out of the other two. LTC Liwanag (former Army AMU commander) steered me to my current reloading process, which is to run all the brass through a Redding neck sizing die and then through a Redding small base die (no crimp) and my problems with the Wylde chamber went away. By using this system, I also work then brass slightly less than if I was using the Dillon "all-in-one" Decap/Neck/Size die overall. Later, I got a 5.56 chamber reamer from Ned Christenson and 'fixed' the Wylde chamber and my brass issue went away. I still use small base die simply because I feel that the Redding die is more consistent and does a better job than the stock Dillon die. Short answer: For me, if my brass goes thru an semi-auto rifle, I small base die size it. Hope that helps. Last edited by KellyTTE; 09-26-2009 at 09:58 PM.. |
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#3 |
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Advanced Senior Member
Join Date: Mar 2008
Location: Las Vegas NV
Posts: 1,148
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Thats almost a trial and error situation, dependent completley on your specific firearm and chamber. I found no need for SB resizing for either my bushmaster .223 or my M1A in .308.
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"Democracy is based on citizenship- perhaps the greatest gift the United States has given to the world- Power is vested in the people themselves, and government flows from the people" James M Henslin |
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#4 |
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Advanced Senior Member
Join Date: Sep 2007
Location: Northeast Georgia
Contributor
Posts: 6,310
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I think the simple answer is: The full length resizing die is adequate.
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NRA Endowment Member GeorgiaCarry.Org Member Retired US Army Postal Worker Personally, I carry a gun because I'm too young to die and too old to take an ass whoopin'.....author unknown (but obviously brilliant)
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#5 |
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V.I.P. Member
Join Date: Sep 2009
Location: SLC, Ut.
Posts: 64
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The .308 has caused me some issue with reloading specs, reading article after article comparing 7.62x51 chamber to .308. I will be reloading for several FN-FAL's that I built and headspaced to SAAMI size rather than Military gauge. About the best article I have read on it so far is http://www.303british.com/id36.html I know the link says .303 but its an article about .308 vs 7.62x51 chamber size.
I will still have to load within the 50K cup for my FAL's. Just thought I would post this so you can read about it. |
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#6 |
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V.I.P. Member
Join Date: Sep 2009
Posts: 234
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Question: I have heard of "small base dies" but what the ell are they?
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#7 |
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Member
Join Date: Sep 2009
Location: Denver CO
Posts: 43
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Small base dies are dies that size to the minimum side of a specification. For instance if a case diameter is XX +/- .004 it will be on the -.004 side. This helps resize the brass for chamber bulges and other sizing artifacts from being fire formed as its shot.
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#8 |
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Member
Join Date: Sep 2009
Posts: 23
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Thanks to all who provided input.
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