They originally ran spec at 425 fps but then dropped to approx your figure presented here but now back up 400 fps plus again..Originally Posted by Rooti McNote
There is 2 theories for this being bandied about, one being they shifted the inlet hole very slightly....either to make cocking easy or other unidentified reason...such as excess oil in system but it does appear that the latest spec does seem to have slightly shifted inlet hole compared to mid term low power models...
I have one running 440 fps though by simply running a full lenghth barrel into the useless void.
Nobody ever bothered manufacturing a silencer for it rendering the void pointless.
HW should have realised running a barrel full lenght would benefit velocity...esp with it being over 30 mm long...used a standard piece of Crosman 1377 barrel for the mod....chucking the rest of the pain in the ass 1377 out with the tat.....bloody thing.
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