The plot on this thickens considerably after reading a lengthy thread on trapshooters.com re: 'Nitro 100 NF = Titewad' or not.
There are conflicting reports, some statements from Hodgdon are contradictory.
It appears that there is actually now a Nitro 100 NF NF. Consensus is that it's now made by St. Marks and not Explosia/Lovex.
This is just advisory, since I don't use the stuff and don't intend to start based on price.
I'd research carefully before loading Nitro 100 for any pressure critical application.