There is no space between the bullet and the barrel. If there was.... oh wait there was... that is what a muzzle loader is.
You don't want any space between your bullet and your barrel. Because if you do, you will loose pressure as well as any kind of accuracy that you would have.
You don't want any space between your bullet and your barrel. Because if you do, you will loose pressure as well as any kind of accuracy that you would have.