I enjoy the whole genre of articles that explore the necked up cartridges based on the 222/223 family of cases. I think they are much more powerful than one might expect, if you don't ask too much of them. My first hand experience has been with a 6 TCU on a mini-Mauser and a 7TCU on a Contender for silhouette shooting. The 6 TCU was able to shoot 85 grain partitions at 2600 fps, which was good enough to kill my son's first whitetailed doe at 125 yards. If the action is small enough, these guns can easily come in at about 5 pounds, pre scope.
