Light & Small = more temp?

[Old Ironsights]

Got a new .375 RB 2cav yesterday and immediately tried to cast some up.

Admittedly, I am using "iffy" alloy that I won't use for Lubed Boolits, but will be just fine for Slingshot Ammo, but MAN I have NEVER had RBs end up so wrinkly.

Also admittedly, I only did 20 on a cold mold, so I'm guessing there just wasn't enough time/contact with melt to heat the mould decently?

I've never used a mould with such small cavities before so I've never seen this...

[dubber123]

You got it, not much lead, alot of mould to heat. Try a 44 gr. .22 caliber sometime if you want frustration. Cast HOT, and fast to keep heat in the mould. Good luck.

[leftiye]

Or use a mold heater. Wrinkly also is the result of oil on a mold (new mold - factory oil still on it?)

[mooman76]

It is even more essential to preheat those small moulds because you get so little melt in there to heat up the mould and keep it hot too. Plus if you are doing RB mould I am assuming you are using a pure or more pure lead which also likes a hotter temp.