Air Temp and shooting a pumper

[beerthief]

i just wonder ? A pumper uses outside air like you breath . So i wonder if the FPE changes when the temp. changes = hotter air drawn into the gun ?
Like today early morning and it was 64 and i was shooting a SSP and continued almost all day ended up temp was 87 , so basically 20 degrees higher temp.
maybe ill have to dig out the crony ?

 

[ctshooter]

I wonder how much difference it makes if you are constantly shooting and re-pumping. I would imagine that if you pumped it at 64 and then shot it at 87 the pressure would be higher and you'd get a touch of valve lock. Alternatively if filled hot and left to cool the shot would have less pressure.

 

[iAMzehTOASTY1]

The direct/indirect sun on your slinger too...the friction heat gain?...which pumper are you speaking of?