This is getting a lot of interesting ideas and thoughts. Just to go back a step apart from Aitch no one has talked about the air in front of the pellet or projectile. I had expected more input with from the F1 experts on the clean air ,dirty air theory.
Apart from a stripper looking good on a gun, the other thing we are sure of is that you can change the way a gun feels with regard to recoil (not sure thats the right terminology) that is muzzle flip up ,down or straight back.
In one of Aitches posts he said that magna porting increases the speed of the projectile leaving the barrel , that must be a good thing depending of course on whether that hits the chrono at an over the top figure .
If one was to go down the route of trying magna porting does anyone have any ideas about ,size of holes and where the should be.