Lag time is not a new concept. The British used it with SMLEs it came around again during rifle silhouette in the 80s, reintroduced in the 90s and again in the middle2000. MDT chassis people have a good read on their web, and Benchrest people have stuff around 2007.
If it were that great everybody would be usuing it and no body would miss. (That Nobody too)
It's just another tool like TOF.
Off topic but the current limitation to the whole party is flame front velocities of propellants.
