thanx Portx5, that is close to the loss i am getting.
i had my swift rebuilt with a 22" lilja and my velocity dropped considerably and is still showing signs of pressure. it looks like i will be down by approximately 300 fps when its all over
I don't have quickload, but it is on my Christmas list. Exact loss impossible to predict except over a chrono. The usual rule of thumb is about 20 - 40 fps loss per inch of barrel removal.