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Lead Pellet Molds & Casting
(My First Approach)
I have made a few molds now and starting to get
better accuracy. I started with using
a lead shaft that I made by drilling a hole in
a two part block. I poured the lead into the hole
and had a somewhat round bar that I could lathe
turn the pellet diameters. I didn't have the
best accuracy by lathe turning the lead.
So after some review of how the molds looked I decided
to make my own.
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I drilled out the backside to lighten the pellets.
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So how do they group?
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As you can see the pellets that where lathed
turned did not fair well. Due to not having a groove in the pellet (a smaller
contact
area for the rifling) the pellet makes to much contact and therefore does not group well.
Second Approach - 1st Mold
Lathe turning was very time consuming so
I made a mold to make the pellets. The grooves in the pellets were not deep enough
and the pellets didn't group well. I learned a few things about pouring lead, like heating the mold
so that the lead doesn't freeze
before the lead pours into the mold.
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Firing the pellets from the first mold.
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With swagging the pellets to size, the pellets did
group a little better. Target is dated
March 14, 2007. I believe the distance to the
target was 30 feet.
Revised - 2nd Mold
On this mold I made the grooves deeper. I then
swagged the pellets to get them closer
to size. I made a cutter that I used mill out the mold.
Single flute cutter worked well.
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I made a plate with different diameter holes. 0.216",
0.217", 0.218", 0.219", 0.220", .224" diameters. This
was I could swage the pellets to a larger
diameter and size the pellets at a diameter that best fits the barrel.
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Target showing how pellets grouped at 50 feet
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