yeah but when I did the place i used to go did not chrono pistols, as there is not much you can do to change them. my eyes got as big as dinner plates when I saw it happen. the guy at the field was like WHAT??? we tested it by doing it several times throughout the day. but when we figured out it would clear after the first shot, they just told me to do a single shot off to the side on the field after filling. thought it was good idea..