its an ADD thing. a lot of people do similar things. i personally shoot and then hit X and A at the same time so it reloads at the top of my jump.
I shoot and reload all the time as assault. I had to quit doing this as a gunner, this took very long and was emotionally very difficult.
I shoot 5 bullets and reload for like 3 times. It kinda warms up your hands. My hands are always asleep.
Active Reloading gives you extra damage and stopping power! With the Sniper Rifle, one shot after active reload puts down your opponent! Duh, WINNING!