You are correct that the choke takes the force. This is because the threads on the rem choke are a lot deeper than the damage to your barrel. I am not telling you it's OK to shoot, but if it were mine, it would not concern me. That being said, I have had shotguns come in where the barrel looked like something out of a buggs bunny cartoon and pealed like a banana back from the muzzle from being full of mud when shot. The only damage was to the gun. Judging from MY past experience, IMO if your choke were to blow out, the worst case would be needing to cut, ream and re-thread the barrel and you need to do that now. Of course doing it now, you don't risk loosing your choke tube.