At room temp with my TM 1911, I can get two mags of bb's on one charge of gas using single shots, 2-3 seconds apart. I can get one mag of bb's when I do double taps 1-2 seconds apart and when I just hammer the trigger as fast as I can, I have one bb left in the mag when the gas runs out. That's reasonable enough for a single stack mag in my opinion. Then again, I have 6 mags