Fireworks.org – The World’s Fireworks Community › Forums › Pyro Technology › Any tips on getting a cleaner break on 4 inch shells? › Reply To: Any tips on getting a cleaner break on 4 inch shells?
What’s your burst charge composition? I’ve found that switching to a 70/30 KP/AL mix gave me noticeably cleaner breaks compared to straight BP. Less smoke, more pop. Takes some fine tuning but worth the effort.