Originally Posted by
Turnup
Although I have no specific source of info, I had always thought the same a ukniel, however some interweb research turns up several different definitions (many of which would seem to be given with only one type of firearm in mind) and I suspect it is one of those terms that means exactly what you want it to.
FWIW in my opinion, it is only really meaningful if we accept ukniels definition (trigger release to projectile in free flight) since it can then me meaningfully applied to any firearm (even a flintlock or matchlock. crossbow). Can't see why anyone would be interested in how long it takes from trigger release to striking the primer - what use would this info be?