Hey going to get HPA tank insted of CO2 this week end. Is getting a HPA tank rather then a having a Co2 with X-pansion chamber a good idea? will i notice a preformance difference from the two? I am mostly a bushball player but lately my gun has been flying all over the damn place in volosity from 200-340. especially when i get out on the field and i start shooting at 190-200 when i cronoed in at 290


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