7mm TCU
Historical Notes:
The 7mm TCU is another of the series of cartridges developed by Wes Ugalde for
Thompson Center and offered as a standard chambering in the single shot
Contender pistol. All are based on the 223 Remington case necked up, this one to
7mm (.284"). The 7mm TCU dates back to 1980, or thereabouts, and has become
quite popular for metallic silhouette pistol shooting. It is also known as
the 7mm x 223.
General Comments:
The 7mm TCU has a reputation for exceptional accuracy and makes a good varmint
cartridge in the T/C Contender pistol, particularly with the 14 inch barrel,
which provides an extra couple of hundred fps over the 10 inch barrel. It is on
the marginal side for deer or other medium game. The originators recommend that
only commercial 223 Remington brass be used for forming cases. Don't use
military brass. Cases are easy to make and can be formed in one operation once
the dies are properly adjusted. Proper case length is 1.740 inches.
Source: Cartridges of the World
| 7mm TCU Reloading Data | ||||
|---|---|---|---|---|
| Bullet (grs.) | Powder / (grs.) | MV | ME | Source |
| 100 SP | BL-C(2) / 28.0 | 2100 | 980 | 14" barrel |
| 115 SP | IMR-4198 / 23.0 | 2185 | 1220 | 14" barrel |
| 130 SP | IMR-4198 / 23.0 | 2050 | 1215 | 14" barrel |
| 140 SP | H-4895 / 24.0 | 1880 | 1100 | 14" barrel |
| 150 SP | BL-C(2) / 25.0 | 1910 | 12220 | 14" barrel |
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