Got my Chrony, work begins

I received my Chrony from PA yesterday and finally got a dry spell to check my guns. My Trail .22 isn't too bad with consistent 790's . I did get concerned with my Nitro Venom .22 as my avg. was 691 for the string. Down range it was 595 @ 34 yds.(CPHP's). I think it may be time to reseal. Never Chronied any of my guns before but my fps seems to be way low from advertised. Shucks, I feel like a real Air Gunner now😉...😆 Stay well all...