Grains measured in CC

[Noraku81]

Well I graduated from a single stage and got myself a Lee turret press with auto disk. Can anyone tell me where I can find a conversion table that will tell me how many grains in a cubic centimeter (cc)? Thanks in advance.

[brian01tj]

As far as I know it doesn't work that way. Grains is weight, CC is volume.

There are different types of powder: ball, flake extruded. Each one will weight differently even though they take up the same volume.

I haven't used a disk measure before but I would guess that you would need to have a different CC disk for each powder and charge to plan to use.

[Noraku81]

yeah I know volume and weight are different. It looks like the formula is charge in grains x VMD factor=Volume CC. So I just need to find the VMD factor for each powder I'm using.

[Bug Splat]

It should have came with a powder CC to GR chart, did it not?

Here is lee's dipper chart. Its in CC's

http://www.leeprecision.com/cgi-data/instruct/Dippers.pdf

Here is the Auto disk instructions with the weight chart:

http://www.leeprecision.com/cgi-data/instruct/AD2302.pdf

Either way I would not trust any chart. Always weigh your charges and triple check your results. Most people just use trial and error to find the right disk hole that gives them the powder weight they want.

[Noraku81]

It should have came with a powder CC to GR chart, did it not?

Here is lee's dipper chart. Its in CC's

http://www.leeprecision.com/cgi-data/instruct/Dippers.pdf

Either way I would not trust any chart. Always weigh your charges and triple check your results. Most people just use trial and error to find the right disk hole that gives them the powder weight they want.

It did but it didn't include information on AA4064. That dipper chart however does give me a good starting point. However, I will probably be doing trial and error until I get the consistent charge that I need.

[buffybuster]

Check the AA's website. Some powder manufacturers/distributors list the volume-density of their powders. If not, then dip one flat scoop, weigh it and divide by the marked cc's. That will give you a close volume density to work with.

[xrMike]

It's highly unlikely you will get the exact charge you want using the holes in the lee autodisk. Buy their adjustable charge bar.

[AEC1]

I use the double disk kit, it gives you way more chices for overall volume, the adjustable chardge bar is good to. Once you get it close from the dipper chart, throught 10 charges first, then weigh 4 or 5 should be pretty consistant. I love mine...

[diginit]

Just run a primed case through it and dump it onto a scale.

[mjsweims]

You should weigh the charge on a regular basis. Different batches of the same powder can have different densities, as can one jug of powder as it ages.

[C.W.M.V.]

It's highly unlikely you will get the exact charge you want using the holes in the lee autodisk. Buy their adjustable charge bar.

+1000
I have used this inmy reloading and found it to be stupid accurate! I do the math and set the bar accordingly and bingo-exactly the correct charge.