2.36-inch Incendiary T313.5-inch A/T T80 and Practice T85
U.S. EXPLOSIVE ORDNANCE
PART 2 - ROCKET AND ROCKET FUZES
Chapter 5 - ROCKET BODIES
Section 3 - SOME ARMY DEVELOPMENTAL TYPES

4.5-inch H.E. S.S. T22 and Practice T46

General: These rockets have the heavier shell of the M8A2 and M9A2. Also, the mo-tor tube is further strengthened and the assembly of the fins slightly changed. The igni-ter is loaded in a tube attached to the trap, extending the length of the propellant char-ge. Its safe temperature range: -20° to +120° F.