Wheel Weight are messy, However, heat them up with lots of fluxing and do not over skim.
Meaning, if you skim away all the stuff which comes to the top WITHOUT ENOUGH FLUXING you will loose some of the good stuff in the WW. For example part of the 1/2% or so of the tin contained in the alloy.
Be aware that adding more tin to the alloy will decrease the amount of shrinkage usually found in just WW bullets. This can be an issue when seating gas checks.
The additional tin will make the bullets a bit brighter, and the added tin makes for easy casting and a higher percentage of bullets which are properly filled out - sharp edges etc.
I normally use, and have done so for years, old candles for my flux. The wife just saves me any candles which have burned down short or gotten bent or broken and they do fine for fluxing.
I DO NOT add any plain lead to my bullets, as I like the hardness of the WW.
In fact, I cold water quench my bullets as I drop them directly from the hot mold.
I have had issues when using a bottom pour pot when using the WW, and a letter to the NRA brought the reply that I would never be able to get the WW clean enough to avoid this issue.
I don't know about that, one way or the other, as I can cast far and away faster with a bottom pour ladle then with a bottom pour pot and have just never gone back to the pot.
By the way, a bottom pour ladle is a vast improvement over any edge pour ladle.
Make sure to do the melting of the WW and the casting in two different steps. First melting and cleaning and pouring ingets, then later cast.
Remember, to also flux, flux, flux all through the casting process as it keeps the metal clean and well alloyed.
How bright your cast bullets are, also depends on the temp used for casting. The cooler temps producing brighter bullets, the higher - more of a gray and if very high a frosted look.
The frosted bullets will also be of smaller dia.
I have a small supply of linotype on hand, but for my casting needs, just never have need of the increased percentage of tin and antimony, over what I already have in the WW.
And remember, PROVIDING YOU TAKE PROPER AND SAFE CARE IN HANDLING of lead and the lead alloys, much of the media hype about the dangers of lead are just that, HYPE.
I have handled lead and it's alloys for years, even at one point having a test for lead while doing another series of blood work and zip/zero/nada. And this very shortly after having a session of melting hundreds of pounds of raw/dirty WW down for ingets.
Be careful, follow the rules and you and yours have nothing to worry about, except the media and the Leftwingers!
Keep em coming!
CDOC