Pedersoli ball mold - "Nominal" size ?

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What's up with that?

(Edit - removed this part, issue solved, problem was deemed to be stupidity~ Sudsy)

I'm looking for a .310 mold and I see this - which I do not understand.
Nominal like a 2x4 is really 1 1/2 by 3 1/2 ? If so how big are the balls this thing drops ?
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Did you measure the bore? What's the measurement?

If a .31 ball won't fit in .32 bore, something is very very wrong with the rifle.

I would look at the rifle before I looked at other molds.
 
If a .31 ball won't fit in .32 bore, something is very very wrong with the rifle.

So I just broke out my calipers to try and figure this out and came to the conclusion that I am an idiot. That's really the only explanation that works here.

It seems that last time I reorganized my mess, I put a bunch of .35 balls that go to a different gun into the box that normally holds the .311's. Both balls I pulled out today to try and load into the .32 were .35.

Time to sit down and sort out a few pounds of balls.
 
"Nominal" means just that. I.e., moulds cast to the diameter stamped on them, but few hit that mark exactly. To wit, I have many moulds, both CF and BP, including custom ones from LBT, CBE (Australia), NOE, Tanner, but not one drops a ball or [elongated] bullet to an exact diameter. In ML's that is less of a problem as you can change your patch thickness to accommodate the difference. In CF rifles and pistols, too big is better than too small, but both problems can be solved.
 
Why is the 'nominal" size of a 2x4 actually 1 1/2 x 3 1/2 ?

“Nominal” means “in name only,” not to be taken literally. “Literally” means “as written (or spoken).”

If a round ball mould is nominally .32 caliber, it might not actually throw a .320” ball, but the ball should be around or approximately that size.

In muzzleloaders, the bore size is measured from top of land to top of land. In rifles intended for shooting patched round balls, the ball diameter is usually more or less smaller than bore diameter. The difference, described as “windage,” is taken up with the patch. We need to know exact bore and ball diameters (and patch thickness) in working up the best load.

Most round ball moulds are meant to be used with pure lead. If you cast a harder alloy of lead, the balls will drop slightly larger than pure lead balls from the same mould.

Notchy Bob
 
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18 posts and the The question still hasn't been answered
How big is the Pedersoli mold and when they use the term "nominal" does it mean that it's not actually .310 as stated ??

Does anyone have one of these? If so how big is the pure lead ball it drops ?
 
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