I really have to wonder if having the weight of he chrony on the end of the barrel is messing with the harmonics of the barrel.It also looks like it is sometimes touching the bottle which could really mess with harmonics. If the flyer would go away the H&N slugs are fantastic. have you tried turning up the power with the slugs?
And the Raptor ?
I really have to wonder if having the weight of he chrony on the end of the barrel is messing with the harmonics of the barrel.