Two for one tunes, I've been wanting to tune my M3 for JSB monsters 25.39 and had time today, so I raise the reg and set the adjustments to shoot them @920fps then backed the Macro from 16 to 4 and the 18.13s are shooting 890fps. both are getting good groups considering the wind is howling today 12-20 variable from around 4oclock position from my shooting table. Heres my groups @ 40y. Blues are 18s greens are 25s and yellows are a sighter. About 6shots in each group more or less
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