Lee Pro Auto-Disk and Unique Help

[JJP161]

I have been working up some new .45 acp loads on my Lee Turret Press with the Lee Pro Auto-Disk and ran into something unusual. According the Lee Charts the Lee Pro Auto-Disk .61 cavity should drop 5.6 Unique and the .66 cavity should drop 6.0, now I know some variation is normal and to be expected but I find to get consistent drops of 5.6 I need to use the .71 cavity and the .76 cavity to get drops of 5.9 - 6.1 of Unique. I recalibfated and checked the digital scale and also verified the charges on a beam scale and got the same results. Any thoughts or concerns. Thank-you

Joe

 

[rwsmith]

If itht's anything....

If it's anything like Lee Powder Dippers the charts are conservative. Everything needs to be verified against a scale.

Update: As per what Arjay sez, I've heard a LOT of people complain about Unique's metering.

 

[arjay]

Go with what the scale tells you.If you can get consistent charges from the lee with unique,that's great.If not try bullseye,it's another good one for the 45.

 

[Rule3]

Go by the scale not the chart.

Some powders are close some not even close. Even my jar of the same powder may be different than yours.

 

[David R]

I had the same problem. Use the scale.

David

 

[Peak53]

I use the same Lee setup as well as Unique and several other powders. I also have to step up a disk cavity size or two from what the chart says to get the proper weight by scale. The chart is only a starting point. Agree that some powders will be closer than others. So, it looks unanimous. Congratulations, you are normal!

 

[scooter123]

Always go by the scale reading. While some powders are better than others I have yet to find one single powder that doesn't have some variation in the weight/volume relationship from lot to lot. It's why I record the lot number along with the setting for the micro adjuster on my Uniflo Competition powder measure.

 

[Jamie]

The listing is just a starting point, go with what the scale says, write down the hole size, weight and the powder, then you'll know what to do next time, your press, your scale.

 

[fatman73]

I use the discs and get good results. I fill the measure let it sit for a bit to settle the powder. But yes I always check with a scale. Universal was the only that seemed off from the corresponding disc # for me. In the back of lees book there is a chart for the conversions

 

[tomf52]

If you are getting consistent metering from a Lee Pro Auto Disk and Unique powder, that in itself is a miracle. Just use whatever disk size you need (checked by a scale) and be happy. Never could get my Auto Disk to measure Unique consistently.

 

[JJP161]

I use the same Lee setup as well as Unique and several other powders. I also have to step up a disk cavity size or two from what the chart says to get the proper weight by scale. The chart is only a starting point. Agree that some powders will be closer than others. So, it looks unanimous. Congratulations, you are normal!

Thank you everyone for the info and I will say out of all the powders I haved used so far Unique and Power Pistol give me the most trouble and the least consistency. Usually the Unique will throw between 5.8 -6.1 and I'm trying to get 5.9 but if memory serves me correctly the max is 6.6 so I still have a safety margin. Power Pistol is usually much more inconsistent and I have a few loads in it I really like but hate to load because of the hassle. Thank you

Joe

 

[gatchelguy]

Unique proved to me that a substance with the texture of cornflakes cannot be measured by volume and then checked for concistensey by weight.