Over the years I have used Hornady, Speer & Star 148 gr HBWC's. When I started shooting PPC in the early 80's I started making my own with a Lyman 4 cavity 358091 148 BBWC mold. These cast bullets proved to be as accurate or more accurate then the factory made ones. My Custom PPC gun, my S&W K-38 & my Colt Officer Model Target guns all shot the bullets very well. My load was 2.7 grs of Bulleye under these bullets.
I started loading these bullet flush for easy feeding in PPC competition. And I still am loading them all that way. Never saw a difference in accuracy by seating them flush. Also use a taper crimp die.