223/5.56

223/5.56

5.56 NATO (outsides) 223 REM (inside) NATO case lengths appox. 1mm longer, do not have mic so I cannot tell the exact dimensions.

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2 years 26 weeks ago, 12:23 PM

Builtf0rdtough

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hmmm, so this would cause a big problem while reloading? you would have to cut the 5.56 down the mm to get it to the .223 lenght? This is a great post, please elaberate, since Im really debating getting a bullet press etc, and .223 will be one of the calibers that I will be making. Thanks

"Socialism is the philosophy of failure, the creed of ignorance, and the gospel of envy"-Winston Churchill
2 years 26 weeks ago, 12:34 PM

Saint J.M. Browning

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No, don't cut them.

The case wall is thicker and the primer pocket differs as well, I believe. But if you have a 5.56 chamber, you can fire either, so just reload it to the case's specs.

"I don't think Hank done it this way" - Waylon
2 years 26 weeks ago, 12:43 PM

daisycutter

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you reload you'll be checking case length on all your empties, trim them to specs called out in your loading manuel for the caliber you have.
They gotta fit into the hole :<)

iyaoyas
2 years 26 weeks ago, 1:03 PM

HampsterW

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I would trim the case.

A few bucks worth of tools and you will be ready to go http://leeprecision.com/xcart/Case-Trimming-Tools/
I use the trimming tool on all shot brass as it is also a case length gauge so it won't cut if not needed, why take the chance of rounds being out of spec.? It's hard to rectify once the bullet is seated. I would head to the auto parts store and pick up one of those $20 digital calipers to make sure that your final product is within spec. I don't like guess work when it comes to re-loads, sometimes seating dies mysteriously get out of adjustment so it's a good tool to have on hand....imho

Change you can truly believe in comes from the barrel of a gun---------------------------------------------------------------------------------Ron Paul 2012----Vote the bastards out!---------------------------------
2 years 26 weeks ago, 1:06 PM

Ishootdaily

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Hard to wear too

if it really goes in a bad direction!

No sir, he fell into that bullet... Never argue with a stupid person. They'll just drag you down to their level and beat you with experience!!
2 years 26 weeks ago, 1:13 PM

Saint J.M. Browning

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trimming 5.56

I meant I wouldn't trim the 5.56 to .223 specs. You could do it, and make a round whose external dimensions match the .223, but I would caution that the charge shouldn't exceed the .223 specs. The 5.56 is capable of higher charges. But if you have a rifle that can chamber NATO, I would stick with that on the original brass.

"I don't think Hank done it this way" - Waylon
2 years 26 weeks ago, 1:18 PM

HampsterW

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I always load to .223 spec. since only two of my three rifles can chamber NATO, no sense in the risk of an ammo mix up and somebody getting hurt or killed.

Change you can truly believe in comes from the barrel of a gun---------------------------------------------------------------------------------Ron Paul 2012----Vote the bastards out!---------------------------------
2 years 26 weeks ago, 1:31 PM

Saint J.M. Browning

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Ammo mix up

Hmm, good point I didn't think of. Yeah, best to back it down. You can always back it down. Least common denominator is best.

"I don't think Hank done it this way" - Waylon
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3 years 16 weeks ago
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