From where I am, you should be happy to find any powder at all, much less a specific powder.
Indy Gun Club had some a few weeks back.
As for FW area, perhaps 21st Century in Bluffton?
If all else fails the Ft. Wayne Coliseum show will be 10/12-13. Trail Boss is worth waiting for - very versatile for light loads with lead bullets.
tomlinson had it the last time I was there(last week)