Don't know about how the ion works, but my normally accurate Trilogy cocker started acting up last time I played and eventually jammed. Turns out the detent had worked it's way in and was too tight. It could be an equally silly problem.On the note of accuracy... does anyone know what barrel is a nice and accurate one for an Ion? I was playing mine for the first time on saturday and it felt like it was going every which way! I currently have a smart parts all american 14".