Hi could some of the experts on here clarify this question. Of recent times there have been a whole raft of new hand cocked air rifles using SSP, nitrogen cylinders. Are any of these accepted in the FT/HFT spring class, or must they be pure spring only to qualify. I can't find any definitive description for this class. I would assume that these new types will be accepted in the standard FT/HFT open classes but just want to know exactly where they relate the Spring class.