Only once and knew the wedge was loose before I shot it. I like to set mine to be tighter than the thumb push. I alway squeeze the barrel and forend, tight while I insert the wedge and then tap it home say about 1/8 or so, from home. ...
You can also pin your wedge as mentioned in a previous post. It may work out but you will not lose as it will stay captured. Have never tried this but others have. ....
Be Safe !!!