Once I accidently dumped Bullseye into a container of Unique. Very similar burn rates to your choices. Like you, I too, made some expensive rose fertilizer.
Unless someone from Winchester's powder manufacturing division comes on here with specific data for you, it's guesswork. Guesswork on stuff like this is asking for trouble.
MSgt, USAF, Retired
NRA Life Member
The hardest thing to explain is the glaringly evident which everybody had decided not to see. - Ayn Rand