It seems some people are not familiar with the concept of a recoilless rifle.
Wikipedia describes it as such: (this is just a larger caliber, as fitted on Jeeps and Landrovers)
"Ammunition for the 105 mm rifle was issued in complete fixed cartridges. The term "fixed" means that the projectile and the cartridge case are crimped together. This ensures correct alignment of the projectile and the cartridge case. It also permits faster loading because the projectile and the cartridge case are loaded as one unit. The rear end of the cartridge case is perforated, to allow the propellant gas to escape through the vented breech, thus neutralizing recoil. The projectiles used are pre-engraved, that is, the rotating bands are cut to engage the rifled bore.
Types of ammunition included: HEAT, High Explosive Plastic-Tracer (HEP-T), and Anti-Personnel-Tracer."
What I can say is that these 105mm guns are spectacular to see in action. (They were called 106 to avoid confusion with a different design). The area behind it should be avoided, there is a backblast from the vented breech that makes rocks bounce around like beach balls.
Topic: One seriously empowered motorcycle (Read 589 times)