Sounded like a great time to try the One Shot sight in procedure (I have never done this)
With the rifle firmly set on the bags, the shooter fires his shot. Hopefully, the shot hit the paper and his scope and the range of the target allow for the hole to be viewed through the scope.
The shooter then instructs his buddy to make adjustments to the scope while he is still viewing, Ideally he will see the crosshairs march across the target and stop exactly on the bullet hole. Some elevation will have to be thrown in at the end of course depending on what the shooter wants on the trajectories.
The shooter has to remember that his view through the scope is opposite to the turrent adj on the scope say…hence, Up requires a down adj & so forth.
Now please pass that oven barbecue recipe