You also don't recognize recoil and all the physics of what causes it. Weight of projectile and velocity aren't the only factors. The base of the projectile will directly affect felt recoil, as it is based on the bore diameter as well as projectile.
What a load of rubbish. The free recoil formula couldn't care less about the base of the projectile or the bore diameter. The free recoil formula uses the weight of the firearm, the weight of the ejecta and the velocity of the ejecta. Nothing more.
