A question of protocol...

First topic message reminder :

Question:

When the Bullseye Match Rangemaster calls the shooters to the line for the first target...

1) Do I have to load live rounds when told to? 

My thoughts... would rather load a few dummy rounds on command for a few dry fire during the allotted 10 minutes THEN reload with live loads when ready.

Not every shooter loads 10 rounds at one time... hence there is a reload under the course of fire. 

Is there a specific ruling prohibiting dry fire allowed after the first slow-fire target turns?

Update: 

Have replaced the mag disconnect bar with the Tandemkross variant... thereby eliminating the magazine controversy. Have since added an additional dry firing window before, during, and after SF just by dropping a wall anchor into the chamber by hand.