The only thing you can drop those bullets in to soften them is molten lead! The antimony in the chilled shot, with some tin, is a better hardening agent than straight tin. I'm using a BN 10 in 38 and 44 specials, with 4.0 and 5.0 Titegroup loads respectively...and no leading in Vaqueros, Bisleys and Blackhawks. At 32 BN, these would be h--- on barrels.
Quick experiment: Put one on a flat hard surface...like an anvil or back portion of a vise....wear safety glasses, etc. and vigorously hit it with a 4 pound hammer. It may shatter! The IPSC types were running this hardness range bullets in the early days of 38 Supers and exotic 9mm types for Unlimited class guns....several reported getting brittle bullets.
I've got a SAECO lead tester and a CABINE TREE combination lead tester/run-out tester, but I think I'd like one of Veral's LBT testers. Everyone says it is is the best and easiest to use. (I bought one of his 433 300 grain WFN moulds for $20! at the Quigley rifle shoot last year and it is super. I'd rate it right up with my 20+ year old 6 cavity Hensley & Gibbs 68 mould.) He sure knows how to make a quality product. Get a copy of his book too!
OFF TOPIC Money is tight, especially for you younger guys with young children...I'm 59. But when you get a chance to get books by John Taffin or Mike Venturino or Veral Smith, do two things. Get two copies--one to read and one to save on the book shelves. And get it signed or even autographed to you. I screwed up on Bill Jordan and Elmer Keith and Skeeter Skelton.