Firing tables. Firing tables, gun, 155-mm, M1917, M1917A1 and M1918M1, firing shell, H. E., M101, shell, smoke. WP, M104, shell, H. E., MK. 3A1, shell, smoke, WP, MK. 7A1 and shell, smoke, HC, B. E., M117, Changes 7; Jan. 5, 1945.