I have a reliable source of range lead (thanks Captain - see forum vendors for very reasonable pricing and outstanding service). My casts in all my molds are a bit heavy, so I need to add some tin/antimony. I know about Rotometals, but the super hard ingots feel expensive for a "value focused" caster like myself. Some might sterotypically say that is the Scotch-Irish in me, and I would not be able to disagree.
With powder coating and being picky about load data, I am not experiencing any leading, but I would like to be able to dial in the weight to be able to push the velocity a bit more. I don't have a chrono, so I am very dependent on published data. Ultimate goal is to ensure that my loads are making IDPA power factors in the event I go from local to regional level matches.
What are the best ways to find tin/antimony "mixers" that I can use to reduce the weight per bullet?
Thanks!