my question to you: have u fire the gun, I bet you will have no issues and I do think you might be worrying about something that is not worth worrying about. Karh magazines are known for not holding that top round in place like most other semi magazines do. It is there by design as they are aware of this.
take the gun out and shoot it 50 rounds and see how it functions. My bet is that it willnot be an issue what so ever. Not sure I would want to dry fire my weapon with live rounds in the magazine anyways, just a place for an accident looking to happen. I realy you are probably tryingtos imulate the weight factor but I just would not recommend doing that. YMMV
take the gun out and shoot it 50 rounds and see how it functions. My bet is that it willnot be an issue what so ever. Not sure I would want to dry fire my weapon with live rounds in the magazine anyways, just a place for an accident looking to happen. I realy you are probably tryingtos imulate the weight factor but I just would not recommend doing that. YMMV