Tokina 11-16 2.8 W/D7100....I shoot in jpeg and then did some tweaking in LR, should I be shooting in RAW then tweak in LR??
Adobe does lossless editing in JPG too, which means,yes, you might as well be shooting Raw.
If you make edits in the JPG, and save it, lossless means the original is always preserved, and it simply saves your edit info (the list of changes, so to speak). Then if you look at that image in other software, lossless means it only sees the original JPG, it does not see your edits. So Lightroom needs to output a new JPG for all other software to see (anything not Lightroom). Lightroom knows how to apply those edits to the new copy it outputs.
So it might as well be Raw. Raw has more range, does not suffer the original JPG problems, does not shift the data back and forth, etc.
Raw is pretty much the idea.
It is true that Raw does not have the camera settings in it. But you can of course set any of those settings you want in Lightroom for it, with the huge advantage of being able to see it first, to know what it needs, and to get it like you want it. This is extreme advantage.