FX Impact .30

November 14 2017 at 7:41 PM
MO'C  (Login ComeStai)
YF12


Response to FX Impact

Only one pellet works for me in the .30 cal, the JSB 44's. My gun was shooting at 870 FPS, max everything, until just recently, when it sunk down to 740 fps mysteriously.
I did the Ernest Rowe Max tune up and between tightening the hammer spring tensioner screw and a slight amount of valve adjustment, I have the velocity up to 840 fps. I believe it was more accurate- my gun that is- at 870, but it still prints well at 840, so I'm living with it.
In .22 cal, the same gun, at 920 fps, has given me 1/2" groups at 100 yards, on a windless day. It's scary accurate, cause when I miss, I know I did something wrong....

 
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  • Power loss - Rick Plumb on Nov 14, 2017, 8:12 PM
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