While I haven't fired the factory Fed TSX rounds, I have handloaded the 168gr TSX in .308Win and have had great results with them. They are very accurate, don't copper foul the bore like some previous Barnes bullets did, and flat out did the job on a couple of wild hogs taken with them.
I highly recommend them, even though they ARE on the expensive side.
"Every moving thing that liveth, I give unto you as meat" (Gen 9:3)
Aim small.........miss small.
Trust God..........but keep your powder dry!