224 Valkyrie
Since 1976

Unprimed Brass Cases

223 Basic (Small Rifle primer)

Un-Tapered (W/O Caliber Designation)(for "Wildcats")
1.780 - 1.810 O.A.L.

This brass is the same as our standard .223 Remington brass except that it has not been formed and has no caliber designation on the headstamp. It should work perfectly for most .223 Remington based wildcats. This brass has not been annealed, and will require a body anneal prior to forming, and possibly a neck anneal after forming, depending on how far it is necked down. Wall thickness at the mouth of this brass is approximately .009", which is the same as our .223 brass prior to forming (the walls will get thicker when formed down, and the case will also get longer). Length is approximately 1.800"

*Since this is a basic case, and Starline has no control over how it is formed, we accept no liability and offer no warranty in its use or your inability to properly form cases. Since this case has not been formed there may be more out-of-round mouths than normal.

Calibers that this could possibly be formed into: 6mm TCU, 6.5 TCU, 7mm TCU, 6x45mm, .25-45 Sharps, 6mm Mongoose, 7.62x40WT, 7Raptor, .357 MAX AR, etc.

Status: Available Now

Box of
223 Basic

*Starline Brass does not sell any loaded ammunition. What you are purchasing are brass cases only and will need to be loaded into ammunition in order to be fired from a firearm.


Overall Rating
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Reviews: 3
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Use this for the 357 AR works great good product

Hans M of Alto, Michigan
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Used to make 357AR (357Max-Rimless) in one step with a trimmer set up with .355" reamer pilot. Trimmed to max case length (they'll shrink a few thousands once fire formed) deburred and loaded. Much easier than expanding 223/5.56 Shot great and will be ordering more.

Joe W of Whetstone , Arizona
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I purchased 250 from the first lot available, shipping was fast and the brass looks awesome. I'm using these to make .357AR brass; so much easier and more consistent than converting GI 5.56x45mm brass into straight-wall cases 1.605" long. The .357AR another wildcat being sponsored/offered by MDWS.