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All Springer/NP/PCP Air Gun Discussion General => PCP/CO2/HPA Air Gun Gates "The Darkside" => Big Bore AirGun Gate => Topic started by: Gippeto on February 09, 2017, 10:20:30 PM

Title: Best speed for 30 JSB?
Post by: Gippeto on February 09, 2017, 10:20:30 PM

Got my .30 running today and a start on tuning. Currently 895-912-903 for 8 shots on 3000psi fill. Lots of room to play in any direction, but wondering if there's a "best" speed to run the JSB's at for accuracy.

TIA

Al

Title: Re: Best speed for 30 JSB?
Post by: rsterne on February 09, 2017, 10:38:04 PM

Ask Tim@ Mac1.... He won the EBR with them a couple years ago in a TJ's liner.... I'm pretty sure he was running the 45 gr. at about 880.... I've run them as fast as 960ish, but never played with velocity to see if they shot better slower.... It is always possible that you could tune them for other velocities with an Air Stripper or Adjustable Tuning Weight, also.... If you have a tune you particularly like, I think I'd try tuning the harmonics....

Bob