Originally Posted by rsiddiqi1
i didnt add anything beside my inner barrel i was also told it could be a air leak, or that i ahve to lubricate the barrel i dont know what is going on??
I think Thunder Cactus just told you why. If you only added the inner barrel, then u probably didnt change cylinders to take into account the increased volume you'll need to maintain the same velocity.
In other words, your barrel is so long, that the BBs are reaching peak velocity and then slowing down at some point in your barrel. In order to remedy this, you need a different cylinder that'll provide more volume.