Anyone using this powder (TiteGroup)?
Lots of loaders use TiteGroup. It's popular and abundant (not sure which is the cause and which is the effect).
It's potent, highly energetic stuff; therefore, it's economical. It's fast, but might actually be a scosh slower than most folks think (from my experience). It's a lot like Bullseye - more so than any other propellant I've used. But it is definitely different.
The biggest difference is that it runs much cleaner. But it's also much more dense, so fill levels - especially in revolver cases - can be very low. The low fill levels however, don't seem to effect combustion consistency. Five - that's FIVE - 2.7 grain charges (what I put under my 148 plated DEWC's) can fit in a 38 Special case.
Its biggest drawback is that it runs mighty hot. So much so that I don't use it for lead. But it's a natural for plated bullets. TG is really hard to beat for high-volume (quantity) general range shooting ammo, using plated bullets. It quite possibly does this better than any other. In this role, it's slightly better suited for semi-autos; even though I personally have loaded more revolver rounds with it (only because I shoot a lot more revolver). I only give the nod to semi-autos because of its high density and low fill rate; as semi-auto cases are smaller. I think it was developed with semi-autos in mind.
If I was loading 115 plated 9mm's, TG would come to my mind first - a true "wheelhouse" combination. It would be hard to not make super clean, super consistent ammo with this pairing.
If I was loading HBWC's for 38 Special, I'd look for something a little less energetic - which would mean W231 or Bullseye (respectively) for me.
As far as the load data inconsistency: don't expend a lot of brain power over it. Use the data as a baseline starting point for
your load work ups - which is the purpose of the data. Not to toil over why TG is the same as B'eye in 38, and different in 9mm. Focus on crafting good ammo.