I start by removing the tang bolt and both sideplate bolts. Before the sideplate bolts are out completely, I tap them to push the lock out of the mortise. Then I remove the pins from the breech toward the muzzle. Generally the barrel will come loose at the muzzle easily then is a little sticky in the middle. If you do turn the gun upside down and tap it a bit to loosen the barrel, always be careful to not strain/pry the forestock. If the mortises for the underlugs come all the way through the ramrod channel, you can help coax it there.