A huge brain fart: unloaded start, with all mags on the table. I was thinking of my initial target engagement - pick up gun, load it, engage targets, reload, run off to the next section. When the beep went, I nailed it perfectly! However, partway through the stage I reached for another mag and nothing..... wtf? Did the mags fall out? Look over at the table to see my mags waiting for me to grab them at the very start, which I didn't do, because I was so focused on the target engagement, rather than the entire start sequence of load up my body, then engage the targets. That wasted several seconds. Oops!