5.56mm Winchester Whitebox


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clutch
January 8, 2011, 06:46 PM
I may have figured it out just typing this. I have a upper and lower on order to build a service rifle and I wanted some ammo on hand to shoot it when the halves show up. Just plinking ammo for now so I bought some Winchester white box at the grocery store and noticed it had crimped in primers and a WCC 09 head stamp.

I was going to ask if .223 ammo typically has crimped in primers but while typing this I realized it is 5.56mm which likely means military spec.

Can I assume that .223 marked ammo isn't crimped for reference?

Thanks,

Clutch

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Fumbler
January 8, 2011, 11:52 PM
You are correct. The majority of 223 is not crimped. A few commercial loads will be crimped. These are usually self defense/duty loads.

Hatterasguy
January 8, 2011, 11:57 PM
Its 5.56 make sure your rifle is chambered for 5.56 and not .223.

It sounds like your building an AR, it should be able to swallow 5.56 without any problems.

JDMorris
January 9, 2011, 12:11 AM
If you plan to shoot 5.56 get a 5.56 barrel or "wylde" chamber, you will face problems shooting 5.56 in a .223 chambered barrel.

clutch
January 9, 2011, 10:53 AM
If you plan to shoot 5.56 get a 5.56 barrel or "wylde" chamber, you will face problems shooting 5.56 in a .223 chambered barrel.

The upper I have on order has the Wylde chamber. Now I gotta google what the difference is between the three.

Clutch

JDMorris
January 9, 2011, 11:10 AM
5.56 sometimes shoots better with actual 5.56 spec ammo, Wylde can shoot both well (jack of all trades), and .223 can only shoot .223 safely..

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