Hungarian cal.4 / 26.5mm flare gun cartridges

Is there any information available on Hungarian cal.4 / 26.5mm flare gun cartridges? In particular post 1945 production would be very interesting to hear about. Anyone?

Maybe this helping:

from years 1867-1918
http://militiahungarorum.extra.hu/1867_f_k_i_j.html
http://militiahungarorum.extra.hu/1867_f_k_i_j_t.html

from years 1919-1944
http://militiahungarorum.extra.hu/1920_f_k_pi_j_t.html
http://militiahungarorum.extra.hu/1920_f_k_pi_j_t_v.html
http://militiahungarorum.extra.hu/1920_f_k_pi_j_t_3.html

PJB

PJB, thanks for this. I have the manual for these before 1945. The time after 1945 is of particular interest.

Nobody?