A “faster” BDO propellant was tested (66/8/2 AP, Al, CuO). Motor was ignited with 3g Mg, Al thermite, 2g BP and 7.9g APCP shavings. A 9s burn is a bit disappointing.

Post burn inspection showed a lot of slag on the nozzle. The throat was partially obstructed by this, reducing the diameter from 11.2 to approximately 7mm.