Technical Bulletin. Heavy Warhead (He and Practice) Ground Impact Probality Tables. (Honest John Rocket Systeem). - USA Voorschrift Technical Bulletin 9-1340-205-12 Firing Tables for Launcher, Rocket 762 mm. Truck Mounted, M 289. Firing Rocket, 762 mm: M 50 MODS, MGR-1B with Warhead Section, HE: M 114 … Firing tables : launcher, rocket, 762mm; truck-mounted, M289; firing rocket, 762mm; M31A1 and M31A1C with AK-M57 an AK-XM57E1 warhead762mm rocket, flash-smoke xm4E1