Question about Lee auto disk powder measure

[joustin]

I made an inter-active spread sheet for the auto disk, http://joustin.com/apps/autodisk.xlsx

 

[carbuncle]

I had a similar issue with charge weight variability, bought the adjustable charge bar and solved it.

 

[Gadawg88]

joustin - thanks, but I notice the disk sizes don't correspond to the actual Lee Auto Disk hole sizes available, or am I missing something?

 

[RealGun]

The numbers on the disks are volume in ccs. The VMD is the factor that gets you from weight in grains to volume in ccs. The powders vary in density, so the conversion charts by powder name are necessary to come up with the disk aperture number (ccs) for known grains or what a disk will yield in grains for a given powder.

 

[Wreck-n-Crew]

joustin - thanks, but I notice the disk sizes don't correspond to the actual Lee Auto Disk hole sizes available, or am I missing something?

Your not missing anything...the don't correspond precisely. They point you in a size direction (conservatively speaking) and when you find the right size ( generally larger than the VMD list) it throws a relatively accurate charge FME.

 

[KingM]

Consistent & correspond are two different things. It is easy for me to believe Lee has built in a safety margin.