Come to think of it, I don't think what I was shooting were those Super Colibri rounds. They were just the Aquila Colibri (I bought them long ago). If memory serves me correctly they were listed as just over 200 fps. Extremely quiet but probably not too deadly on even small critters!
(They would kill a beer can though!)
I perforated about 100 rats with those Colibris when the old lady behind my parents' place had an old standalone garage cave in