QEV coaxial Air Cannon experiments - UNEDITED

READ SAFETY INFORMATION BELOW I noticed a grey stripe of aluminum on a recovered bb, so I was wondering which could be the causes of it. Two experiments were made, unfortunately the one that was filmed didn't return any evidences, but the other one seems to give happy news! My smoothbore barrels don't cause any spin on the bb's! :D I find these experiments a good example of how to isolate the factors and put the hypothesis to test. This is an UNEDITED video. It may have defects of video and audio and lack of comments. Please don't judge too severely. Consider this video as a way of sharing my science work, not my editing capabilities. BIODEGRADABLE BB'S ARE USED FOR THE SAKE OF THE ENVIRONMENT. THE EXPERIMENTS PERFORMED ON THIS VIDEO CAN BE DANGEROUS. IT IS NOT ADVISABLE TO REPRODUCE THEM. ALWAYS TRY TO PREDICT AND CONTROL EACH EXPERIMENT'S RISK. IF YOU ENCOUNTER ANY UNPREDICTED RISK, STOP THE EXPERIMENT INMEDIATELY UNTIL THE RISK IS CONTROLLED. ALWAYS WEAR EYE PROTECTION. All likes reserved. Copyleft if author mentioned. Likes and subscribers highly appreciated. Comentarios o dudas en español siempre bienvenidas ;)