Anyone have any clue on the avg PSI out of the barrel of a paintball gun ? lemme be more specific. I need to know what type of pressures sensor I need for a shot counter, the pressure senser is going to be built into a barrel plug and sense when the gun is dry fired and then calculate BPS. I don't need exact numbers, I know they will be about the same for each gun (only so much force is needed to push a paintball 300 fps) with the only diffrence coming from the barrel, so if there is any info on 18inch ported and 10inch unported (I figure these will be practicle extremes) or if there is a (CHEAP) way to figure this out myself. I don't have the money to make a big mistake on this one.