Had the same problem a couple of month's back..
Being fresh back into the airgun scene and getting my first pcp (after shooting springers year's previously ) I thought they were totally recoiless..
Messing about with various homemade bench rests to get better stability i found if the barrel or silencer touched anything solid my groups went horrible to say the least!!
Probably common knowledge to you lads but like i say i'm new back to the airgun scene and thought pcp's were totally recoiless.
Goodluck muttley94.. hope you get it sorted
Thanks guys, This could well