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Posted: 2/17/2006 3:04:22 PM EDT
I have a book that does not have 5.56 in it, thus i am looking for the max case length of a 5.56 piece of brass. I have about 3K rounds of mil brass to trim, and i would like to have these cases prepped and loaded before i get my sig 556(hopefully mid fall to early winter)
is there a difference in length between 223 and 5.56? i know they are interchangeable, but if i go to the trouble of trimming the cases i would like them to be to spec.
thanks
Link Posted: 2/17/2006 3:08:25 PM EDT
No, the difference between the two is in the leade of the rifling, the 5.56 NATO having greater freebore which lowers the peak chamber pressure.
Link Posted: 2/17/2006 3:09:11 PM EDT

Originally Posted By par0thead151:
I have a book that does not have 5.56 in it, thus i am looking for the max case length of a 5.56 piece of brass. I have about 3K rounds of mil brass to trim, and i would like to have these cases prepped and loaded before i get my sig 556(hopefully mid fall to early winter)
is there a difference in length between 223 and 5.56? i know they are interchangeable, but if i go to the trouble of trimming the cases i would like them to be to spec.
thanks



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Link Posted: 2/17/2006 3:12:43 PM EDT
[Last Edit: 2/17/2006 3:13:38 PM EDT by LoginName]
Link Posted: 2/17/2006 3:18:19 PM EDT
[Last Edit: 2/17/2006 4:06:32 PM EDT by par0thead151]
sorry i meant the length of the brass... i checked the book and for 223 it is supposed to be 1.75 trimmed, and 1.76 max.
thanks for the confirmation that they are the same, now it looks like i have my night cut out for me... sitting infront of the TV trimming away thousands of cases!

edit:
[sarcasam/]
i forgot how much fun trimming brass was!!!
[/sarcasam]
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