Don't know about the speedloader, but here are some chrongraph results that might be of some interest.
2†Lady Smith Airlite 317-2 Chron Results – Temp 70 – 3 Paces from Muzzle (Approx 9’):
WW High Speed Hollow Point (100 Round Plastic Pack) 1,005 fps
WW High Speed Hollow Point (100 Round Plastic Pack) 941 fps
WW High Speed Hollow Point (100 Round Plastic Pack) 997 fps
WW High Speed Hollow Point (100 Round Plastic Pack) 973 fps
WW High Speed Hollow Point (100 Round Plastic Pack) 982 fps
CCI Mini Mag Hollow Points (100 Round Plastic Pack) 893 fps
CCI Mini Mag Hollow Points (100 Round Plastic Pack) 908 fps
CCI Mini Mag Hollow Points (100 Round Plastic Pack) 862 fps
CCI Mini Mag Hollow Points (100 Round Plastic Pack) 871 fps
CCI Mini Mag Hollow Points (100 Round Plastic Pack) 888 fps
CCI Stinger Hollow Points (50 Round Plastic Pack) 1,120 fps
CCI Stinger Hollow Points (50 Round Plastic Pack) 1,091 fps
CCI Stinger Hollow Points (50 Round Plastic Pack) 1,079 fps
CCI Stinger Hollow Points (50 Round Plastic Pack) 1,094 fps
CCI Stinger Hollow Points (50 Round Plastic Pack) 1,069 fps