OOPS accidently inflated fps with a 130* F or so valve on MK 177

[K.O.]

I had sat it on an oil filled heater because I thought the pump cup had taken a set...

I did not even think about ideal gas law...

so when I pumped 1600 or so psi of 70* F air into the valve I got about a 160 psi boost

Cold figures are 898 fps with 7.9g CPHP in 22 pumps a 16.75" barrel and some leakage... Still pretty impressive... a 24" barrel would put it back near 1000 FPS...

anyways sorry folks some times ya just don't think...

hey I am not a manufacturer looking for ways to do so...

[K.O.]

K.O.'s patented heated valve pumpers