I have both, sitting in my loading room, as I write this.
They are not the same bullet. The XLC is a coated XBT,
and the Triple Shock is an uncoated all copper bullet,
with three rings, that look similar to a cannelure ring.
The XBT is the "original" Barnes X Bullet, in a boat tail
form.
The XBT either in the uncoated version, or the coated XLC
version, are much more fussy about loading, to be accurate.
I have gotten excellent accuracy from them, in some
loadings, and chamberings, but in general I have shot a
bunch up,trying to find a load with acceptable accuracy.
WhenI find a load, they are rock solid performers.
The Triple Shock, on the other hand is much easier to
find accurate loads for, and often times, it is the
first powder that I try, that I end up using is some
pretty impressively accurate loads. The on game
preformance is equally impressive. I have a .308 Win
load, with the 130 gr. TSX, for my Savage Striker, that
is .5 MOA, and flattens northern Whitetails. I have a
100 gr. TSX load, for my .25-06 Rem, that is a lazer,
and hits deer like the Hammer of Thor. I am waiting to
see how my 300 WSM load, with 168 gr TSX bullets, work
on elk. I am expecting impressive results, too.
Squeeze