I'm kind of new to TiteGroup - got some last summer for the first time. But I've used and tested it quite a bit for 38/44 Special, and 45 ACP. In terms of burn rate speed range, it should work pretty well in 40 S&W / 165gn bullets; for general range shooters.
The problem I think you're going to run into is leading. Shooting lead in 40 S&W tends to be problematic to begin with. But on top of that, it seems that TiteGroup burns hot.
In my efforts to find a good use for TiteGroup, I've pretty much reserved it for plated bullets. From my experience (and I still have some more testing to do), it sure seems that hot-burning TG likes to lead barrels - and that's with cartridges that are far more lead-friendly than 40 Smith.