I have now acquired what may be a lifetime supply of soft lead. Most of it is sheet lead vents or lead pipe from metal recyclers for $0.60 per pound. Much of the discussion on this forum references wheel weights and type being used for getting antimony and/or tin into the casting mix.
I have never seen type for sale at anywhere close to reasonable cost, but have been offered wheel weights at a decent price - the recyclers seem to think they are lead, but all the buckets I've sorted through are 90% Zinc and Steel.
As a result, all of my additives have been Pewter bought from ebay, and chunks of Antimony from the same source. Are you really still buying wheel weights and Linotype? Or was this stuff bought 30 years ago?