My dad was on Iwo Jima with a carbine, and my uncles in other areas of the PTO with carbines. They all liked it, and said it worked great for them. All of their fighting was up close. As far as the carbine being equal to a 357, I think you will find it quite a bit more powerful than a 357. A 110 carbine round generates 1970 FPS and 960 ft lbs ME at the muzzle and at 100 yards delivers 1567 FPS and 600 ft lbs ME. The 357 only gives that much at the muzzle (what the carbine gives at 100 yards) even out of a 357 carbine!