I have the 14" barrel and it's a handful. It's got the power of a 30-06 I'd say. I also have a 30-06 Remington 700 rifle that kicks like a mule. Considering that the 375 is a larger caliber than the '06, I'll bet the carbine barrel would kick at least as bad as the '06 and probably worse. Those 23" carbine barrels are really light. I almost bought the same barrel you are considering, but changed to a 30-30 just to avoid the aftermath....
bj