You can determine if the gun is on face, and tight (not necessarily the same thing), by yourself, very easily. Take off the forend. Hold the gun vertically, and by the receiver, and shake it. If you cannot feel ANY movement the gun is tight in action. Put the forend back on and hold the gun horizontally and between you and a strong light source. Look for light between the breech ends of the barrels and the standing breech of the receiver. Look very closely, moving the gun around minutely to be sure. If you can see absolutely no light between the two it is probably on face. You can try to close the gun with a piece of shim stock between the breech ends of the barrels and the standing breech to be sure ..... .001"-.002".

SRH

May God bless America and those who defend her.