Weight of Round Balls according to the diameter?

[dtknowles]

Wouldn't a bullet that weighs the same as a round ball.......be a round ball? Or hockey puck shape?

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Nope. I swage round balls into round nose flat base bullets. They then have more bearing area to grip the rifling. I am thinking of making the nose punch that will form a hollow point. That would make the bullet even longer and cooler.

[fiberoptik]

Nope. I swage round balls into round nose flat base bullets. They then have more bearing area to grip the rifling. I am thinking of making the nose punch that will form a hollow point. That would make the bullet even longer and cooler.

Why? Shoot them bare or still patched?


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[indian joe]

That's an incorrect assumption. It could be a full wadcutter, semi wadcutter, roundnose, or pretty much any other standard bullet shape.

Texas was correct so long as the diameter remains the same

[T-Bird]

swaging reduces the diameter doesn't it? Texas seems right to me too.

[dondiego]

swaging reduces the diameter doesn't it? Texas seems right to me too.

Swaging is pressure applied to lead in order to change it's shape. It can reduce diameter and also increase diameter.

[charlie b]

Swaging is pressing the lead into a mold of some shape. Can be any shape or dia you want.

If you swage a round ball you can simply flatten the end of it until it makes a short cylinder with a round nose. It will be shorter than a round ball of the same weight.

Or, as stated above, you could use a hollow point front end and flat back end, or any other shape you want, including a hollow base. Just have to use the proper dies.

Most do not swage lead simply due to the cost of the dies.

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[dtknowles]

Why? Shoot them bare or still patched?


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I breech seat them in my .32 Stevens bicycle rifle and propel them with a nail set charge.

[ofitg]

Is thee a formula for determining the weight of a pure lead round ball by its diameter. It would be easy just to weigh it, but I don’t have one and I want to make a boolit close to the same weight.

This online calculator seems to work -

https://www.vcalc.com/wiki/vcalc/sphere+-+weight

However, it uses the ball's RADIUS, which is simply half of the diameter.

The blue fields allow you to select the units you want. For example, a .45 ball has a radius of 0.225 inches, and pure lead has a density of 11.3 g/cm^3.
The calculator output is set to "grain", and the weight is 136 grains.

[Lars-K]

Hi, I will release a calculator soon that will include calculating round ball bullet weight. (I will include link in this post)

[Lars-K]

Looks like this for now:

[Lars-K]

So, I have converted the code from Visual Basic to Javascript. This way it will be a web based calculator.
Link to get it running is here: https://weatherby.dk/BP/rb/roundball.htm

Looks like this: (Will be upgraded)

Enjoy!

[SSGOldfart]

So, I have converted the code from Visual Basic to Javascript. This way it will be a web based calculator.
Link to get it running is here: https://weatherby.dk/BP/rb/roundball.htm

Enjoy!

Thank-you Sir that worked great

[Cap'n Morgan]

I once wrote an equation on my trusty HP28 calculator for calculating the number of shot in a shotshell for a given shot size and payload.
The HP had a function called "Solver", and the beauty of it was that you could have any number of variables and the calculator would solve for each of them as long as the other variables were filled in.

The program had four variables:

#1 = Diameter of shot

#1 = Weight of shot

#2 = Number of pellets

#3 = Weight of payload

#4 = Density of shot (this variable was a switch between two values. I use the density for lead and steel)

If you input two of the first three variables, the program would calculate the last:

If you wanted to find the weight of a single ball, you just filled in the diameter and "1" for number of pellets.

If you wanted to find the size of the balls in a 1-1/8 ounce 12 pellet buckshot load, you entered "12" for pellets and 32 for weight (32 grams=1-1/8 ounce)

And finally, to find the number of shots, fill in payload weight and pellet diameter.

These days, I use the ballistic program KPY https://kpyshotshellballistics.com/ It has many nice features, and I can strongly recommended it

(the link gives an privacy/security warning, but is alright)

[Lars-K]

Stay tuned, a Round ball BC calculator is in progress. Sneak peek:

[indian joe]

You do the math and you get the weight of the ball IN THEORY!!
Unless the ball is swaged there's going to be a void, a true void, in the ball. It will be up near the sprue. Cut one in half and look for yourself.
My grandpa showed me this eons ago. That's one reason why you load sprue up. It's also why people weigh their RB.

I have a LEE double cavity .495 mold ---the formula says 182 grains -- weighed a run of stuff this morning got from 181.5 to 183.2 - - I am some perticular with the look of my cast stuff . no wrinkles etc so any junk ones went back in the pot.
After casting I tumble these in a canvas bag with some powdered graphite and I load with sprue every whichaway (cant see it after the rumble / tumble).