Even so, you would be better off using Regular pump and heating to 10000000000000
Oops, -1000000000000000000000
Hint: Go to Prop (in tools), Select it. Now select "Type", and click "Temp". Type in 100000000000000000000. Heat The gravity pump to given temp. Leave the section touching the PSCN/NSCN unheated. Gun preformance should increase.