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| $ 2.50 per Cartridge |
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| 6mm TCU |
| ("Parent Cartridge") |
| .223 Remington or 5.56x45mm |
| 6mm TCU for (Thompson Center/Ugadle) Developed in the 1970's by Wes Ugalde of Nevada for the Thompson Center Single Shot Pistol to use in silhouette competition. Formed from the .233 or (5.56x45mm) Remington, the case mouth is increased from 22 caliber to 6mm and the angle of the case to the neck is increased from 23 degrees to 40 degrees, case length is almost the same, but the shape is definitely different from the .223 Remington! |
| Wildcat |
| 6mm TCU |
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| $ 4.50 Cartridge in Labeled Sleeve |
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| Cartridge |
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| .223 |
| .223 |
| .223 or 5.56x45mm |
| 6mm TCU |
| 6mm TCU |
| 6mm TCU |