I have had two instances with paying clients, where a Blaser R8 discharged without notification.
Last time was about 5 years ago. The rifle was locked into an expensive pair of sticks. A fallow pricket had just been taken, and the rifle remained in the sticks, a clamp type system (there about £400 to buy).
The client was not touching the rifle, and I was about to move forward to pick up the fallen deer at about 80 yards away. Fortunatley I stopped myself. The client tounched the end of the stock to pick the rifle up, and it discharged.
Needless to say after this incident and the one before with an R8, I am not a lover of Blaser rifles.