My understanding is the smokeless rated barrel is any of the .45 barrels that Woodman Arms offers.
NO SMOKELESS IN THE .50 CAL
Any BP substitute can be used!
But I would never consider soiling this fine barrel with any other than BH209 or smokeless.
I'm not sure but there will or is a .40 cal barrel 1-15 twist, that I'm interested in as well.
View attachment 43452
To me the great thing about the Patriot is just how versatile it is. That's a 10 shot group, 5 with BH209 and 5 with smokeless N120, full bore .45 Fury sized to my barrel. Only difference between the two loads is the powder of choice ! Medium pressure adjustable breech plug.
What an amazing rifle!