Thanks, Richard - yes, I'm just pondering the possible change in reliability between the regular Spout of the common Banger and a version which could include an explicit prime / first fire. Loose powder content from the normal Spout charge would no doubt make it very likely that it would ignite - I'm just considering what "sure thing" would look like. Given that a Spout delay was also used on e.g. some large set pieces, I think reliability is a good objective of course. Thanks again. J.