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Hondo 60
02-24-2013, 04:54 PM
OK, if the lead is too cold, you don't get a good fill.

And they're frosted if it too hot, but so what?
What's the down side?

I just casted my first 75 - (ran out of melted lead or I would've done more.)
And what is that hard crust on top of the melt?

thanks

41 mag fan
02-24-2013, 05:53 PM
Got a pic??

turmech
02-24-2013, 05:58 PM
Frosted bullets are happy bullets and shoot fine.

only bad things are they then to stick in the mold and not fall free as easy and it can effect diameter.

geargnasher
02-24-2013, 06:51 PM
"Frosting" is entirely an effect of mould temperature, NOT alloy temperature. If they don't look sandblasted and the corners all rounded, and they didn't get way too small, shoot them. I like a nice light, satin frost on my wheel-weight boolits myself.

Gear

DLCTEX
02-24-2013, 06:53 PM
Excessive frosting can cause shrunken bands and generally undersize boolits. Using a damp sponge to cool the mould and/or sprue plate can sped casting and produce better boolits. I don't worry about light frosting.

Hondo 60
02-24-2013, 06:56 PM
Great - thanks for the replies.

badbob454
02-24-2013, 08:46 PM
frosted boolits may hold lube better in the tumble lube process , due to no smooth surface .. so a plus there , i like mine shiny , a pretty boolit , only because it looks nice .. no good reason , ...

40Super
02-24-2013, 10:48 PM
I heat the molds up till the boolit start frosting and then slow down just a bit. I like my slugs to be right at the line of light frost and shiny. It help keep my weights consistent because it is a small temp window and each time I cast I know I'm at the same conditions. As for the question, frosted bullets are just fine, it just means the mold is at the top temp it should be run at.

RobS
02-24-2013, 11:49 PM
One downside is if the alloy is too hot and tin is present in the alloy it could burn off. It does come down to mold temp for a frosty antimony alloyed boolit as mentioned however alloy temp does have direct correlation in the equation. Regards to whether a frosty boolit performs accurately, well I've yet to see any difference between a frosty one that was well filled out and a nice, shinny one equally filled out; they shoot the same from my firearms.

MtGun44
02-25-2013, 12:46 AM
No down side to frosted.

Bill

Hondo 60
02-25-2013, 02:20 PM
41 Mag Fan asked for it, so here it is.
My very first casting.
I think they turned out rather nice!

62395

1 boolit - 200 gr .452 for a 45 ACP or 45 Colt
&
5 boolits - 91 gr .32 for a .32 H&R Magnum (at slower velocity)

timberhawk
02-25-2013, 03:10 PM
A little frost on the bullets is fine. The'll shoot great and you won't have any rounded driving bands.

K-Rod
02-25-2013, 08:33 PM
OK, if the lead is too cold, you don't get a good fill.

And they're frosted if it too hot, but so what?
What's the down side?

I just casted my first 75 - (ran out of melted lead or I would've done more.)
And what is that hard crust on top of the melt?

thanks

Nothing wrong with Frosted boolits but as far as the "Crust on top of the melt", your running your pot so hot that your burning off the tin!!

Either turn your pot down or stir your pot more often to keep from burning off the tin.