well I'm not an expert in phyics but i guessing if you release a lower pressure gas over the body of the bullet that means the air is thinner around the bullet thus reducing drag.
I have an idea that I would like to discuss.
My idea is to emit a low pressure low friction gas out the nose of a small arms bullet. I believe it would lower the drag over the body of the bullet thus increasing velocity and range.
I just need to know if the phyics are right is this...