As usual, I suggest doing an AO forum search on 'cast lead' or similar.
Using the 'advanced search' function, you can refine your search by including your favorite or most informative posters.
From
http://www.outdoorsmenforum.ca/showt...ight=cast+lead
Pure linotype can be used to cast very hard (HB~22) bullets but many consider them too hard for hunting and too expensive for targets. Linotype bullets are reported to be so hard that they can fracture or shatter if dropped. Some articles talk about casting hybrid bullets with a linotype base and a softer tip but ISTM to be a lot of work for very little benefit.
IIRC, linotype lead is available (in 11?lb bars) from Canada Metal in Calgary and costs ~ $6/lb.
IIRC, linotype it is ~12% antimony & 4% tin & 84% lead. YMMV,
and used linotype? can vary a LOT. I suggest testing hardness and only purchasing if the price is very good.
I prefer to segregate stick-on wheel weights (~99.5% lead & .5% tin, HB~6) and clip-on wheel weights (96% lead & .5% tin & 3-4% antimony, HB~15).
I use the soft lead (HB~6) for 'slugging the bore' and shotgun slugs, AFAIK, this is the best lead for muzzle loaders.
I use clip-on lead (HB~15) for casting (water quenched and aged) pistol bullets and for gas checked rifle bullets. Clip-on lead is a good base to use for making Lyman # 2 a LOT cheaper than buying and shipping it. Lead is not extremely expensive, but shipping can cost more than the lead.
High levels of antimony produce harder bullets which can handle higher pressure and velocity and reduce leading of the barrel.
AFAIK, antimony is very difficult to safely alloy with lead as it requires high temperatures which can create high level lead fumes, and can also contaminate surrounding surfaces. Pure antimony is sold by Canada Metal, but I have not tried to add to any lead alloy, I would like to know more about how to use it safely.
Most wheel weight lead requires tin to be added to improve mold fill-out. IMHE, the easiest source of tin is 95-5 (95% tin & 5% antimony) solder which also has the added benefit of raising the antimony level and hardness of the alloy. If a harder alloy is desired then linotype is the easiest and safest source of antimony as it is already alloyed with lead and tin.
Previously smelted lead alloys will have unknown concentrations of lead/antimony/tin and may be contaminated with zinc. I prefer to smelt my own lead from separated wheel weights to minimize zinc contamination. I use a Lee hardness tester to measure the HB of my alloys and record this in my loading records.
Good Luck, YMMV
Common practice for rifle and high pressure pistol use has been to cast hard boolits and use a hard lube to reduce bore leading. These boolits may not be ideal for hunting as they will not mushroom optimally.
The latest practice is to cast softer boolits (which saves on Linotype cost), then powder coat using the shake-n-bake technique, and cook in a toaster oven reserved for the purpose. This produces a boolit that is more resistant or eliminates bore leading, can be driven faster, and will mushroom better. It also saves the cost of a Lube-Sizer or the mess of pan-lubing, and the boolits are 'purrdy', and do not oxidize in storage. Inexpensive push through sizing dies can be used, if needed.
Good Luck, YMMV.