Search:

As others have said check all scope screws as I would never trust anything that some H&F do.
Next time give it a good clean fit the surppressor and set rifle up same as you did last time. And shoot...

What are you using for a rest.
You will need to decide if you are going to use it with the surppressor on or not as it will shoot totally different without it on, did you buy it with the surppressor...