6mm TCU
Historical Notes:
The 6mm TCU was developed by Wes Ugalde of Fallon, Nevada for Thompson/Center as
one of the chamberings for the Contender single shot pistol. It is the 223
Remington necked up to to 243 caliber and is practically identical to the
older (1965) 6mm
223 Remington or the 6x45mm.
The 6mm TCU is intended primarily as a metallic silhouette pistol cartridge,
whereas the 6mm 223
Remington was developed as a rifle cartridge for benchrest and varmint
shooting.
General Comments:
Necking the 223 Remington up to 6mm provides an advantage over the 22 caliber by
reducing wind drift and, with heavier bullets, providing more energy down range.
Also, 6mm cartridges in this class have a relatively mild report and less recoil
than say, the 243
Winchester or 6mm
Remington. T/C cautions against the use of military brass and recommends
commercial 223
Remington brass for forming 6mm TCU cases. The 6mm TCU is adequate for small
to medium varmints, but is on the light side for deer.
Source: Cartridges of the World
| 6mm TCU Reloading Data | ||||
|---|---|---|---|---|
| Bullet (grs.) | Powder / (grs.) | MV | ME | Source |
| 60 HP | W-748 / 29.0 | 2610 | 905 | 14" barrel |
| 70 HP | H-4895 / 26.0 | 2585 | 1045 | 14" barrel |
| 80 HP | H-4895 / 25.0 | 2515 | 1065 | 14" barrel |
© www.reloadbench.com 1999 - 2005 All Rights Reserved
|
|
 |
|