I have no idea about ft/sec and really don't care but all I know is 4 c/c of FFg, an over powder card wad, a ½” fiber wad, the same 4 c/c of #9 shot capped with an over shot wad and a good tight roll crimp will, at SASS ranges, knock a 25# steel knock down target flatter that a wet cow pie on a hot parking lot.
That is a Texas thang,y’all.
Smilingly submitted
Bunk