Want to ask a few question, Im currently using 455 mm edgi 6.01 barrel using 130 psi Im getting 470 fps with 0.2, but whem im using 0.48 im geting 371 fps or around 3.2 joules ( 580 fps in 0.2 ) this must be a joule creep. so im thinking that my barrel is too short for the Bolt Hpa system ? so i joule creep much. but how about when i change the barrel to 560mm or 650mm like the KJW m700, will it still joule creeping ? or my fps will go higher using longer barrel ? need help for the information. thank you.