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I guessed wrong.

February 4 2012 at 10:41 AM
  (Login gubb33ps)
YF


Response to .25 cal with CO2 does 700....

Thats the trouble with guessing by ear.

But its not bad for an initial setting.

JSB 25.4 = 870fps
Kodiak 30.6 = 810fps

Also guessed wrong about the sweet spot pressure; it is lower than guessed. Rather than 2700psi, its more like a 2400psi sweet spot. So there is room to move up in fill pressure and readjust the gun to run right.

Won't be a lot of shots. That tube has a volume of something like 106cc's. Running an air efficiency calculator a few times, even if I got it tuned to very low air use, will be a short shot string at that energy level.

 
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