That's a nice Peli!
Is it a gusher with Waterman ink?
(Inspired blue was my first ink bottle... Pilot black was my first FP ink ever, and Pelikan 4001 Royal Blue was my first cart ink.)
Pen puts a wet line, but I will not call it a gusher. It is a F nib, and it writes finer, unlike other western F pens. I have M600 newer one in EF nib, and I can say both 400NN with F nib and M600 with EF nib, are same.