Put a 20 shot string on each pellet through my 77 with the follwoing results on the chrony

JSB
800.95Mean800.5Med810.3Max796.1min4.39324Std Dev

AA Fields

797.11Mean795.35Med806.8Max787.2min5.966285Std Dev

Recon not bad for a springer. Will be poping in a Macari Full power Kit in the next few weeks. All things being equal I wont be under 12fps anymore which is fine since Iam not shooting competition with it. Will see if standard dev and range between min and maks shrinks. Standard dev is smaller on the JSB's which is the importnat stat thou the range is the one that determines that one shot flyer. But on the other hand not that important since im not shooting benchrest with it