The only commercial lead boolits I buy are the soft swaged ones like the Speer SWCHP.
Commercial cast boolits are nearly always too hard & undersized.
Regarding what StrawHat said: I was trying to decide if I wanted to get into casting again after a 20-year hiatus, during which I sold all my equipment..
When I crunched the numbers, I determined even if I used commercial alloy (vs smelting my own from scrap), a Lee 20-lb furnace, six-cavity mold (handles extra), and a Lee sizer kit (mounts to your press, the setup would pay for itself in 3,000 rounds of .38 boolits.