I have a Verminator MK2 Fac in .177 and on full power it groups fine with JSB's 10,34 grain. However on power 2 and 1 it hust won't group with any pellet. I think the ST barrel does not like low(er) velocity's. I'm considering of replacing the barrel with an LW ore BSA barrel.
Anyone who did this ?
BSA Scorpion .177 17 lbs Humareg, Falcon Menace 4x14 FFP
FX Verminator MK2 .177 19 lbs, Falcon Menace 4x14 FFP