Hi Dave,,,
I have a G1 and a powerline and if your powerline is as powerful as mine, and I'll bet it is,,,, then I'd go with the powerline,,, my powerline hits incredibly hard !! I'd also use Predator pellets if they shoot well from the gun and try and keep the distance to 20 yards or less and definitely go a head shot. With that scenario I don't see any problem taking out a raccoon, even a large one.
Jeff