The bullet shown is basically a wadcutter (WC) with a slightly longer than normal nose, probably to try and get a bit more stability out at the 50 yard range.
I use Lyman #358495, a 148 gr. WC cast feom wheel weight (WW) metal over 3.0 gr. of W-231. Also, 2.5 and 2.7 grains of Bullesye have given me good results, but I've been getting my best groups with W-231.
A while back, I was given a smokin' deal on Winchester .38 Spl. target ammo. I almost hate to say this, but my home cast WC loads outshoot the expensive factory stuff.
Paul B.