first timer

[tmak]

I've been reading for quite awhile now and desided that I've got a question I know someone can answer. If your water dropping bullets to harden them what are the hardness of a bullet that is left in the moulds as they cool to room temp? thanks to all that add to these forums I hope to learn more from all of you.

[felix]

The softest they will ever be for that alloy. ... felix

[tmak]

I've been casting 20:1 for 15 or so years for bpcr. I've only been casting ww for about 6 mo and I'm having a hard time with the frosting,shrinking.and worrying about the hardness. So if I add tin will the frosting go away? I've read that the frosting does no harm but I sure do like my bullets all shiny.I've been casting for a 357 in straight ww with no gas check how hard can I run then 1200-1400?

[shotman]

you are running you lead too hot get the temp of lead and mold down to about the 700 degree area and the frosting will go away shotman

[tmak]

I just got done with a batch. I was casting at 620 from a rcbs thermometer using a propane buner. I'm getting frosting from 620 threw 750 but what i can't understand is why at such low temp I'm getting shrinkage. I remelted the bad ones I'll try to cast again tomorrow so I can send in a pic of the bad ones.

[dromia]

Welcome to Cast Boolits tmak. :drinks:

[DLCTEX]

I'd question the accuracy of the thermometer if you're getting frosting at 650. Are you leaving the therm. in the melt? I'm wondering about the possibility of temp. climbing after you check it. Welcome to Cast Boolits. DALE

[tmak]

When I'm casting the thermometer is in all the time. Before i start casting I let the temp settle.
Maybe I've had it to easy casting 20:1. This is my first real try with short small cal. bullets in ww.

[copdills]

welcome to the forum tmak , I am sure someone on this forum will be able to help you , they have always be there for me and I still have alot of questions I just started casting mine

[Springfield]

It's not the temp of the lead that is causing the frosting, it's the temp of the mould. Cast just a bit slower and the frosting should go away. I can frost a 44 bullet with the lead at 590 if I cast really fast. And I can get shiny bullets at 750 if I go slow.

[C1PNR]

Or you might try the BruceB "speed casting" method using a wet cloth to help control mould temperature. I'm sure there's a sticky of that somewhere on here.