Its not my rifle but a question concerning what is acceptable in this scenario, Im happy to tinker and others wouldn't touch their mew pcp so wondered how bad a rifle had to shoot before it was accepted as faulty by an rfd or manufacturer.

Would a s400 be returned if it grouped bigger than say 10p at 40yds, or a Brockock or even a Steyr. Is their an acceptable group, if not a manufacturer could just say it fires pellets so its doing its job, where they go is not important, with no reference its a mine field I guess

Chris