Guy at the range the other day gave me some of those blue plastic rounds to try.They go off like a cap gun.They would not extract,it was a PITA to dig out.Will as you know not cycle the action.From my 100 yrd. zero they flew right a 3:00 even with the bullseye 4" to the right.There was a slight wind left to right.Found the "bullet" it is hard plastic.