Aaron, I am not very good either, but I consider sighting in a new rifle to be an important part of the process of getting to know the rifle and becoming comfortable with and confident in the zero.
It is tempting to be frustrated when one's performance is worse than another's. Some else is better than they are, and there are others worse than we are.
If you set your 452 up in a supported position, and really focus on your technique, you will get your best groups, and will not need to worry about the rifle being the weak link when you are shooting off hand.
I don't think you should view this opportunity as an obstacle.