Stop! You will damage the rifle seriously if you simply "resort to sticking it in the barrel press" and try to unscrew the barrel by brute force! In the Gibbs take-down system, the barrel is locked in it's threads by the front action screw. So first remove the foreend. Then loosen the front action screw, forward of the magazine,several turns. Only now the barrel may be unscrewed. The front action screw here is longer than usual and goes into a detent in the barrel threads. If you try to unscrew the barrel with that screw still tight you will shear off the tip of the screw and/or ruin the threads.