Originally Posted by
rintinglen
@Delftshooter, Welcome to the circus!
Speer and Hornady manuals did show different load levels when they sold both types of wadcutters. Now Speer only gives data for the HBWC, because they have discontinued their swaged, button-nosed wadcutters. The issue stems from manufacturers creating data only for their own products. If you were using data from Lyman for a 358-63 DEWC from a Lyman Manual, the reason there was no HBWC data is that Lyman hasn't made an HBWC mold in over 40 years. They haven't the incentive nor the resources to research and create data for every other product produced by other product. Especially since wadcutters in general have fallen by the wayside as U.S. shooters have moved away from the 38/357 revolvers to 9 mm semiautos. In general, most shooters now have moved from primarily target applications with defensive usage very much a secondary consideration, to the reverse, with the weapon aspect of the firearm the predominant focus.
However, the internet is a goldmine if you use it well. Here on this website there are many who have information on just about any aspect of reloading, not only cast boolits, but case forming, primer manufacture, tool modification as well as a wealth of load data from real-life users.