Hornady powder measure and unique not happy

[drsjr1969]

Well was trying to dial it in to 7.9gr and just when I thought I'd got it set it throws a 7.6 then a few later 8.0, 7.7, 7.8 back and forth. Thats a .5 grain spread is this normal for Unique or for hornady measure?

[sw.sharpe]

Ah yes - Hornady and Unique are not a happy couple. I too tried to meter Unique, using my Hornady progressive loader setup, and failed miserably. Never got it working despite trying to reduce static by completely cleaning the powder mechanism and using anti-static laundry thingies. Ended up trading Unique for a box of 22lr. I have never had problems with powders such as Hodgdon-38, Winchester-231 & Autcomp and Vihtavuori-3N37. Maybe the Unique is a smaller grain powder?

Normal spread for me is +-0.1 grains.

[sstewart]

What about 800x. I have some but I too have LNL. It's suppose to be great for 10mm , I'm just afraid of metering issues.

As a last ditch effort. You could buy powered graphite and run 3 to 6 rounds. Then dump the graphite (keep for another time) and pour in powder again. Hornady suggested this once to me when I was starting out. YMMV

[sw.sharpe]

What about 800x. I have some but I too have LNL. It's suppose to be great for 10mm , I'm just afraid of metering issues.

As a last ditch effort. You could buy powered graphite and run 3 to 6 rounds. Then dump the graphite (keep for another time) and pour in powder again. Hornady suggested this once to me when I was starting out. YMMV

Never tried 800x so cannot comment. I am intrigued by the graphite suggestion. What did Hornady say regarding using graphite?

[The_Shadow]

The dru graphite powder is used to keep the powder from sticking, adhering to the inside of the hopper and parts as well as reducing static. 

IMR800X, larger, hard flakes, as they flow into metering devices they don't cut through the flakes as easy as other types.  So due to these factors it doesn't meter quite as consistent as other powders.  However with careful hand weighing you can get a greater potential for performance that the powder yields for many cartridges.