socals&w;
I no longer have an S&W Model 52. However, I loaded for one for many years. They are a FINE auto.

Factory Wadcutter cases are different inside. They have less taper inside to handle the deeper seating of a HBWC (HBWC's are longer than DEWC's and seat deeper than SWC and Round nose bullets, also {I know that you can't use those in your auto}). When you use some brands of cases, the deeper seating causes a bulge in the case interfering with case feeding and possibly ejection.

The Lee Factory Crimp die should solve the problem for you. If you had the factory target cases, that would probably do it also. I just use the Lee Factory Crimp die. However, THAT will be a problem with the Dillon SDB. You do NOT need a heavy crimp with wad cutters. They should just be tight enough to iron out the flare. I would also suggest upping the powder charge to 3.0 grs of Bullseye.

Good luck!
Dale53