Welcome to AH. Sure someone here will be able to answer your question.
Here is my take on snap caps (dummy rounds) Every year before the hunting season starts I start by practicing with dry fire drills using snap caps (aluminuim, you will see why later). I start at home using 2 to 4 caps, I pick a spot on the wall load the rifle with a cap and 1 to 3 in the mag. I will then shoulder the rifle and try to get it on the spot I picked as quickly as possible, this ensures I find the weld spot on my stock and proper alignment with the scope. The moment I find the spot on the wall, I pull the trigger and reload, fireing the second snap cap, do not remove the rifle from your shoulder or move your head when working the bolt, if the bolt touches your face in the back ward cycle, your scope needs to be moved. After these two shots, I will either reload the rifle, or assume the neutral shooting position and start the whole cycle again.
You are creating muscle memory with the repetition, dont over do it, stop when your arms get tired.
After a few weeks I will run a hunting movie on the tv and pick my shots with the snap caps, always fire a follow up shot as above.
My range sessions are always ended with the snap caps, it ensures no flinching, this is also why I use the alu caps, the plastic ones melt in a hot barrel.
I practice the same way for moving targets.
The alu caps will last between 550-650 full cycles from the mag before the rim is useless, pretty good bang for your buck.
I cannot take credit for this training method,it was taught to me by probably the worlds best moving animal shooter.
Good luck.