If you are using a bottom pour ladle, you might find casting a little easier by switching over to using a table spoon to reduce the amount of molten lead per ladle, and you may find that enlarging the vent hole on the mould will allow for more air to escape from the mold as you are filling the mold cavity with molten lead. You should find that when the lead is the right heat (temperature), air bubbles or voids as well as wrinkles will no longer occur, and at that temperature, it may take about a "four-count" (one thousand one, one thousand two...and so forth) before the lead solidifies after being poured into the mold. If you use a mold prep like the graphite type, you might also try "smutting" the inside of the mold cavity with a candle flame will further eliminate not only "wrinkling" but will improve the mold release time. On average, I cast about 250 minies per hour using a table spoon and dipping the lead directly from a 10-pound lead pot at a temp of about 950 deg. I tried using a Lee production pot but went back to what I found worked best, and I have been using this method for 40 years.
First Cousin (7 times removed) to Brigadier General Stand Watie (1806-1871), CSA
1st Cherokee Mounted Rifles | Principal Chief of the Cherokee Nation 1862-66
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