Look at what you actually get with those bullets. The advertised advantage of them is an increased ballistic coefficient, but it is actually worse than the BC of the 158gn XTP. The .357 FTX bullets also have a longer bearing surface which means that they build higher pressure than a normal bullet of the same weight meaning reduced velocity, lower than the 158XTP. Lower BC and lower velocity means more arc in the trajectory, a shorter effective range and more wind drift.
If that was the only problem, they would merely be pointless. Throwing good money after bad, though, is the fact that you have to trim your brass to a shorter than normal length (reducing case capacity, upping pressure and reducing velocity even more) and ruining the brass for normal use thereafter.
Don't waste your money. The 158gn XTP is a better performing bullet. If you want a hunting bullet from a carbine, the 170gn Speer and the 180gn XTPs are great choices.
