As Mike N had suggested, I'm going to shoot 100 yard targets for score over time(weekly maybe?) to see how consistently accurate the gun/tune is.
FX Crown MK1 in Chassis w/ 700mm Superior Heavy shooting JSB .217(sorted for diamater) KnockOut slugs @ 890fps
I shot this target in 8-15mph gusting wind:
Later, the wind calmed down to 0-5mph and I shot this one: