Hypothetical question; if you and I were in a gunfight at mid-range and I had to do a rifle mag change from behind cover and then move behind you with a ‘hot’ gun, would you want my rifle to be on ‘Safe’?
There is only one correct answer. It would be negligent to move in close quarters with another with the rifle on ‘Fire’.
Therefore, when we practice mag changes, whether on a bolt lock or tac reload, we should throw the rifle on ‘Safe’.
This should be a subconscious level driven task. It should be rehearsed in training for the appropriate amount of meaningful repetitions to the point of ‘automaticity’.
When I hear guys say that it is not necessary to throw the weapon on safe during a reload, I am hearing them say “I am fucking lazy.” “I do not want to perform the proper amount of repetitions to ensure that this is an intuitive level task.”
Putting the rifle on ‘Safe’ during a reload, when done right, will not slow you down so
it won’t become a disabler. This can only be an enabler.