Originally posted by pbjosh
Though I do think a tighter port will work as well or better. In the case of the cocker, the bolt normally isn't touching the bolt face when it is in the barrel. The paint is a little bit away, having moved when the bolt stopped. So the 'Face' of the bolt won't affect the paint too much.
That's not the point he's making. The point he's trying to make is that the air pressure decreases because it has to expand more. The question I have is how are you losing energy? Wouldn't the gas just fill more space and you'd make it up in volume?[/b][/quote]