We had some local guys having problems with 9MM's and poppers so we ordered in some Fed American Eagle 147gr FMJ flat point that seems to do a better job of knocking them over with the smaller 9MM rounds.
i tried the 147's outta my sr9 they worked nice for bowling pins out at 50 then i tried the new hornady steelmatch 125 gr HP they hit as hard as the 147's do i think plus the accuracy was a tad better with the steelmatch