I load these using standard load data for 200 grain bullets to around 2000 fps and get excellent accuracy in my SMLE's. They are sized in a Lee .314" bottom push sizer die and lubed with the liq alox that comes with.
I neck size the cases as is needed for best accuracy out of the typical SMLE.
These outperform all jacketed bullets that I've tried. Cast from WW, they also make very good hunting bullets and will expand some (rivet) so long as they are air cooled.