I am substituting the potassium bromide with Iodised Sea Salt at 10 x the amount so this would be 10 g/l. I also used the waterfree Washing Soda rather than the sodium carbonate which probably just gives the same result.
My next roll of film will be some 125 ASA to see if the grain is even tighter and I will use the same process or try the recommended Rodinal at 1:25.
Camera : Canon A1
Film: Ilford Pan 400
ASA EI: 400
Developer: Caffenol C-H 15min @ 20c
Agitation: Constant inversion for 1st minute then 1 inversion every 20 seconds.Scanner: Plustek 7400