My balls are to big

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Bull Creek, WV
Using my .440 mold I pour .442 up to .444 about 9 out of 10 times .I am puzzled .I could understand smaller but not larger .I have a large rubber band around the handles to keep steady pressure on it.Has anybody had this happen ?
 
Using my .440 mold I pour .442 up to .444 about 9 out of 10 times .I am puzzled .I could understand smaller but not larger .I have a large rubber band around the handles to keep steady pressure on it.Has anybody had this happen ?
Are you using pure lead or an alloy? Alloys tend to produce a slightly larger ball that pure lead.
 
Don't use a rubber band . Hold the handles tightly in your hand and I do mean very tightly closed also the pure lead as mentioned
 
Your mold just drops them big. The cherry might have been brand new when they cut the blocks.

Every mold can be different. Sometimes I have to search through molds of a certain size until I get one that drops a projectile I am happy with.

If you sell those molds, advertise the size of the ball dropped, not the size on the box.

Edit—didn’t see the wheel weight lead bit.

And: I didn’t know alloy bullets end up being larger. Cool, learned something new.
 
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Your mold just drops them big. The cherry might have been brand new when they cut the blocks.

Every mold can be different. Sometimes I have to search through molds of a certain size until I get one that drops a projectile I am happy with.

If you sell those molds, advertise the size of the ball dropped, not the size on the box.
I think you’re on to something.when it warms up a little I’ll give them a a try.
 
Using my .440 mold I pour .442 up to .444 about 9 out of 10 times .I am puzzled .I could understand smaller but not larger .I have a large rubber band around the handles to keep steady pressure on it.Has anybody had this happen ?
A few things:

1) I probably have around 50 molds. Very few molds drop the size that is stamped on them.
2) Alloy composition will affect ball size.

Also,
3) Mold temperature will affect ball weight.

When the mold is cold, you will get lighter bullets. When it is average, you'll get most of your bullets in that weight. When it starts running hot, you'll get heavier bullets.
 
It is a Lee mold and new .I am using wheel weight lead .There was a slight mold line until I put the band on.It’s not areal rubber band not a cross section of a bicycle inner tube
The wheel weight lead appears to be the issue. Try pure lead and compare the results.
 
weigh those ww balls, bet even being over size they will be under weight.
WW is great for those other guns. can't remember the alloy but i think it is 95-3-2
with the 3 and 2 being tin and antimony. should have a hardness of 11-12 on the hardness scale. pure lead is @5 on the Brinell scale.
 
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