sungazer wrote:OB you are correct it is all about the weight of the projectile. They all fall at the same speed it is the weight that determines the energy that is imparted on hitting the ground / head , building ect.
I am being a bit nitpicky here, and I could be wrong, but... not every projectile falls at the same speed (and I’m not talking because of different drag coefficients). Every projectile, ignoring drag and reaching terminal velocity, falls at the same speed only if it starts falling from the same height - because the constant is the rate of acceleration at 9.8m/s
The reason I mention it is because, I do not know but I would guess, if you shoot a 30-06 straight up into the air I’m betting it goes a lot higher than a .22. So when it reaches the top of its arc, it has more time to accelerate because it’s falling a longer distance. Which would mean it’s also going faster when it hits the dirt (or your head) - although I’m guessing it would probably reach its terminal velocity and stop accelerating before then.