Girandonis fired a ball from (roughly) 150 to 200 grains at about 800 fps. So power-wise, it was neck-and-neck with a standard velocity .38 Special.
Which is A TON more power than a "very low powered BB guns."
It would be nice if folks would read an entire post before responding to it.
Oh, well ...
People around here (too many of them, anyway) are too damn dumb to read an article before making a knee-jerk response to the headline.