hi i'm a phycisist engineer and a designer too, i can help you with you issue is pretty simple but not top easy se must work with Lorentz force to imitate a railgun kind of,the rounds of the cool me the thick of the wireless are critical as well as the power phase, but what Dou you need ?the electronics, the case protector the equation or all of them? please if you have any doubt let me know it thankyou!.