For the past five years we have run our Ontario CQB matches with "hot" transitions to pistol. After shooting a rapid fire rifle drill, the safety shooter would see the mag drop and an empty chamber and shout "Clear!", while tapping the shooter on the back. The shooter would then drop the rifle, draw his pistol, and fire his 10 shots at 2 targets.
In theory, this is safe. However, there is always the risk of a shooter dropping a loaded rifle before the Safety can stop him.
This weekend we we tried a new approach. The two elements were split in half - 10 seconds for each. For the rifle, the shooter advances 5 yards on the whistle and fires his 10 shots in 10 seconds. This turned out to be fairly easy. The rifles are then all cleared, and after the line is clear, we start the pistol shoot. The shooter starts with his rifle in the aim, and on the whistle drops the rifle, draws and racks his pistol, and fires his 10 shots in 10 seconds. This is not easy, but it is doable.
Don't let the Lee Enfield in the movie confuse you. I usually shoot this event with an AR-15, but thought I would try a Lee Enfield for giggles. It worked well, except that being scoped I could not do speed reloads with a stripper clip. Next time I will try one with iron sights.
This YouTube clip shows what a "Cold" transition looks like in real time.
http://youtu.be/t_vZY9Wp_CE