Took a look at my notes and my HW97K with Vortek PG4 kit and Vacuseal is shooting 14.5 to 15 ft/lbs with the pellets I chronied at the time(JSB 8.44 Diablo and H&N FTT 8.64) I never shot anything as light as 7 grain pellets. I don't believe that is a good match for that powerplant.Got my gun today. Vortek kit installed. The test shot numbers look pretty good!
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