Originally Posted by ridebmx211
You always should adjust velocity via the IVG at the back of the marker
You don't ALWAYS have to. As long as efficiency isn't a huge concern and you want a lighter pump action then you can bring out the IVG so the main spring is less tense and easier to cock. Once the IVG is where you want, adjust the reg. from there.
Also, the Eigenbarrel is an excellent purchase.