The problem with this entire thread is the use of “wadcutter” as a generic term. It is not. There are many types of wadcutter bullet: HBWC, DEWC, BNWC, BBWC, SWC, SWCHP, and a few which are deprecated, like the old Spire-Point Wadcutters which started with the Bullseye shooting trend.
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I suggest the OP look up those acronyms and learn about each one. Don’t ask, look them up.
Some designs are easier and more economical to cast while others are better suited to swaging.
There are many alloys suitable to each type but some type of bullets will require harder or softer alloys to work effectively. More to the point it’s always important to note the alloys used in testing and only consider those similar to your bullets alloy. It’s really not useful to compare testing tables with results from antimonial lead bullets to those which are the results of Linotype bullets.
It’s important to convey accurately what you are using when asking questions. It will help prevent confusion and bad information being passed along.