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QB78 .177 MV- okay @ 600fps?

January 27 2017 at 2:17 PM

cobalt  (Login cobalt327)
YF12

New .177 QB78 bought 12-2016. Totally stock. Tested using a chronograph. First CO2 cartridge, getting ~600 fps w/Crosman Premier HP 7.9 gr, want to know if this is reasonable or abnormally low- I've seen reports of QB78 velocities being higher but little/no info on what, if anything, has been done to these guns to get the higher MV. All that I have done is clean the barrel prior to shooting it the first time.

Thanks in advance, Mark

 
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