was having a good old practice session with my hw100 today and whilst halfway through a very nice group benchrested at a target set at 35 yds one shot landed about a foot low i continued the session firing around another 50 shots with no further problems.i'd checked all the pellets before loading the mag & i was only half way through my 200bar charge.being new to pcp i was wondering if freak occurrences like this happen or should i be worried about the gun?and before you ask i haven't got parkinsons or a drink problem