Firstly, I would like to say that I have no idea has to why Mr Evans lost the zero on his gun at the Worlds.
I did not see anyone touch, knock or move his gun. (nor was I taking any notice of it either).
However, I can put my name forward as a witness to what the gun was shooting like on Thursdays practice day.
The reason being I was sat at side of him and we were BOTH shooting at the same practice board at 45m.
We used the same pellet mark as an aiming point to check wind and generally see if the guns were ok.
His grouping was as good as mine at that time. This I can say. And I saw no issues.
What moved his zero after that I have no idea.