I use Berrys .357s and .40s. They dont like fast velocities. In .38 Specials they are pretty good. In high end .357s accuracy drops off, and the .40s in the S&W out of a PC4 carbine are horrible. I have not used the Raniers, but Ive been told they have a thicker plating (and conversly Speer has probably the thickest of the three,) so they might take the higher velocities better. I think the thinner plating of the Berrys, added to the fact the cores are swaged, means that they dont grip the rifling very good at high velocity loadings. I would go with the Raniers, but thats just me. Instead, Im starting to switch over to bulk pack bullets instead. They cost a bit more, but you can push them any speed you want. Ive already done it with my Sig 220. The Bulk Winchester 230s are just awesome in my gun.
Brian M.
P.S. I had contacted Berrys last year. Ive since deleted the e-mail, but they told me to keep velocities around 1000 fps.