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Posted: 3/18/2009 3:06:26 PM EDT
| I have a bunch of LC 5.56 brass to reload. I know I can shoot the .223 out of the 5.56 chambers but what if I want to shoot this brass out of a .223 chambered rifle? I understand that 5.56 has a higher pressure than .223 due to the case thickness? However, to shoot this out of a .223 chambered rifle, do I need to scale back the charge? If so, by how much to make it safe? Sorry for the noob question. |
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Quoted:
I have a bunch of LC 5.56 brass to reload. I know I can shoot the .223 out of the 5.56 chambers but what if I want to shoot this brass out of a .223 chambered rifle? I understand that 5.56 has a higher pressure than .223 due to the case thickness? However, to shoot this out of a .223 chambered rifle, do I need to scale back the charge? If so, by how much to make it safe? Sorry for the noob question. The major difference between the two is the chamber throat/leade, not the case dimensions. Do you own a reloading manual? Here is a good read. http://www.6mmbr.com/223Rem.html |
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Here is the answer to my question...
Military brass cases are usually heavier than commercial cases so maximum loads should be reduced by at least 10% and approached cautiously. That is because the reduced case capacity results in a higher loading density and increased pressure with the same powder charge. Reloaders Nest Thanks to those that tried. |
| You haven't read the proposed article from 6mmBR.com or you would have seen that some military .223/5.56 cases are actually lighter weight than commercial cases. The heavier weight military cases that it is recommended to download 10% are usually .308/30-06 sized cases. So your post that your answer has been found and nobody got it right is unfounded. The above recommended post does show weight differences that should be paid attention to if loading to near maximum charges then switching brands of brass. You will find that LC and WCC brass is not heavier than most commercial cases and is usually lighter weight. |
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Quoted:
Here is the answer to my question... Military brass cases are usually heavier than commercial cases so maximum loads should be reduced by at least 10% and approached cautiously. That is because the reduced case capacity results in a higher loading density and increased pressure with the same powder charge. Reloaders Nest Thanks to those that tried. The problem with that advice is that it's wrong with regard to 5.56X45 cases. LC brass is virtually identical in weight and hardness to Winchester, WCC, and Lapua. .308 cases are heavier to suffer through machine guns. |
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Quoted:
You haven't read the proposed article from 6mmBR.com or you would have seen that some military .223/5.56 cases are actually lighter weight than commercial cases. The heavier weight military cases that it is recommended to download 10% are usually .308/30-06 sized cases. So your post that your answer has been found and nobody got it right is unfounded. The above recommended post does show weight differences that should be paid attention to if loading to near maximum charges then switching brands of brass. You will find that LC and WCC brass is not heavier than most commercial cases and is usually lighter weight. Thanks for the info. The quote I referred to was specifically with regard to .223, not .308. I'm not disputing your claim by any means and thank you for pointing it out. However, the case volume of the LC brass I have is less than the Rem. .233 cases I have. That is why I posted the question. Also, I did not say "nobody got it right", I meant nobody answered the question. Thanks again. Clark |
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Quoted:
Here is the answer to my question... Military brass cases are usually heavier than commercial cases so maximum loads should be reduced by at least 10% and approached cautiously. That is because the reduced case capacity results in a higher loading density and increased pressure with the same powder charge. Reloaders Nest Thanks to those that tried. As stated previously not all 5.56x45 is mil brass.. so you can't assume such.. but you probably won't hurt yourself other than wasting bullets, powder, and primers loading the lighter load for plinking. Brass might last longer too.. |
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