I got that:
PNF4 -> 0,1 to 0,25 mm -> FFFFG (for priming)
PNF2 -> 0,25 to 0,70 mm -> FFFG (handguns)
PNF1 -> 0,30 to 0,80 mm -> FFG (rifles)
P.N. de Chasse -> 0,20 à 1,0 mm -> FFG (hunting powder for shotguns)
Mousquet Tir -> 0,60 à 2,0 mm -> FFG (muskets)
From nobel website...