After looking for quite some time, I finially got lucky and scored two buckets of wheel weights.

Processed the two buckets that I picked up, lots of different kinds, have to be careful, some with zinc.
According to Lee's chapter on casting, zinc is bad.

After a while, you can kinda tell which one are O.K.,I use a "scratch test" with an awl, to tell how hard they are.
Some are even marked Zn for zinc, or Fe for iron.

Zinc melts at about 800 degrees I think?, the pot gets to 900 degrees, but I haven't had a problem, so far.

Some are marked "Micro" and seem very soft, some marked "M.C." and "AL-MC" don't know for sure, but they passed the "scratch test" so I melted them.
Some other marking are "T", seems hard, but melt, some marked "P" seem O.K.

Kinda make you wonder if there is a data base on markings?

Got my .357 6 cavity dies in the other day, didn't realize that they didn't come with handles, the round ball and the shot gun slug dies did, so had to reorder and wait.

Came in yesterday, so poured a few hundred .357's to day, not to many "culls" after I got the dies up to temp, and my technique down.

Coated with Lee's Alox and they are drying right now.
Since I paid about $60 bucks for 450 bullets last time around for the .357, I think I am already ahead of the game.

I believe most of those markings are the manufacture, but it's likely they do use different alloys.

Are you having any problems keeping the 6 cavity mold consistently and evenly warm? Mine was cooling off too quickly, so I went back to the 2 cavity variety.

Are you having any problems keeping the 6 cavity mold consistently and evenly warm? Mine was cooling off too quickly, so I went back to the 2 cavity variety.

No, I actually have to touch it to a damp rag after a couple of pours, to keep it from getting too hot.
I am using a Lee aluminum 6 cavity mold, and after I got it warmed up, and started to get a even pour, they come out very nice.
As I using the gas checks, the bottoms (where the sprue place slices them off), have to be in pretty good shape fro the gas check to fit properly.

Should have started out with a double cavity an a non-gas-check type bullet, but that's not how I chose to do it.
I have been real happy with the finished product, and production rate, but I am going to weigh some up to see how consistent they are.

Then load some up and out to the range.

Next will be the .44, then maybe a .30 cal.