PLEASE re-read William and Jeff's comments.
THE FIRST THING TO GET OVER IS:
"HARD CAST" - is NOT necessarily a good thing! Almost all other commercial
caster apparently do not understand this.
Using EXPENSIVE alloys to cast super hard boolits for cartridges that do NOT need
hard alloys is a waste and often makes the boolits perform MORE POORLY!
For .38 Spl, use .358, and .45 ACP size to .452 and cast to about 8-10 BHN
WITH A LOWER COST ALLOY and you will be able to sell cheaper than your
competition and still please the customer (perhaps even MORE than the
competition's TOO HARD boolits). If you offer 9mm boolits in .357 and
.358 diam and not very hard, say 12-14 BHN you may be deluged by customers
because YOURS will work where everyone else's .355 and .356 diam glass
hard junk-boolits will NOT.
If you have a web site, you might even try EDUCATING your customers that
hard is not important and FIT is super important. Point out that .357 or .358
and softer alloy will work much better in most 9mms. Some folks will
try it and be AMAZED.
Bill